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Coinbase Tutorial. A Definitive Guide for Newcomers.

Coinbase Tutorial. A Definitive Guide for Newcomers.

As cryptocurrencies become more abundant throughout our society, more information must be prevalent to educate the newcomers into the world of cryptocurrency and blockchain technology. If you’re new to cryptocurrencies, then you’ve come to the right place as Coinbase is one of the simplest cryptocurrency trading platforms to get started on. Once you understand Coinbase, more advanced trading platforms such as Binance won’t seem as intimidating.

What is Coinbase?

Coinbase is a cryptocurrency trading platform which allows you to buy and sell five different cryptocurrencies: Bitcoin, Bitcoin Cash, Ethereum, Ethereum Classic, and Litecoin. Note that there are over thousands of different cryptocurrencies but these four are what Coinbase specializes in.

Making a Coinbase account

Creating a Coinbase account is very simple but there’s much more to it compared to something like creating a Reddit account. Be sure to have either your driver’s license, passport, or identification card at hand as you’ll be asked to provide this information via upload.
Coinbase currently has a sign-up promotion going on. If you haven't signed up yet, sign up using this link and you'll receive $10 free in bitcoin (after you spend $100).

Why does Coinbase need to see my ID?

Coinbase needs to be able to verify your identify because they are a regulated financial service company operating in the US. As they state on their website:
As a regulated financial service company operating in the US we are periodically required to identify users on our platform. This ensures we remain in compliance with KYC/AML laws in the jurisdictions in which we operate, something that is necessary for us to be able to continue to offer digital currency exchange services to our customers.
Once you’ve created your account, you’ll have to wait until you get approved before you’re allowed to start buying and trading on the platform. This can take upwards of 7 days till approval. Coinbase will also make two distinct small charges towards your bank account. You will need to find these charges and register them into Coinbase as a part of the approval process.
The time in which it’ll take to get approved will vary person to person, just be patient and you eventually will get approved. In the mean-time I highly recommend taking some extra steps done to ensure the security, and longevity of your account.

Securing Your Coinbase Account

Two Factor Authentication

Upon signing into your Coinbase account, you’ll be sent a text message containing a code in which you will have to input allowing you to access your account. This is a security measure done to ensure it is specifically you trying to access your account, it’s important to note that a hacker could still compromise your account through a social engineering attack with what is known as a phone porting attack. This attack is done after obtaining your phone number and various other personal information, the hacker will then call up your phone carrier impersonating you, and then attempt to port your number over to a new device. Once a hacker has access to your text messages, they can then access your account with your SMS two-factor authentication code. If you’d like to see a real example of how this can play out, Cody Brown shares his example of how he lost $8k worth of bitcoin to this attack.
Anyways, the best way to prevent this is through the use of an authenticator. The most common being Google Authenticator. I don’t want to get into too much technical details as to how authenticators work. Think of it as a digital key, stored on a device that changes every 30 seconds.
In order to enable authenticator for Coinbase, go to Settings > Security and Enable Authenticator as shown here. After that a prompt will appear along with a QR code and a secret code (comprised of a random string of 16 letters & numbers). You will need to open up your Google Authenticator app and scan in your QR code. You will also need to write down your secret code and keep it in a safe place such as a safe and/or security deposit box.
Once enabled, any time you wish to access your Coinbase account or make trades/transfers, you will need access to the 6-digit code provided by your authenticator.
IMPORTANT: If you lose access to the device you’ve enacted authenticator on, you ABSOLUTELY WILL NOT be able to recover your account UNLESS you have that 16 digit secret code. This is a serious matter that should be taken with serious caution. It is important you take preventative security measures to ensure the security of your cryptocurrency. I highly recommend calling your bank and opening a security deposit box. This will mostly likely cost a yearly fee but the peace of mind alone is worth it IMO.

Phishing Schemes

I’d like to briefly touch on phishing schemes. Phishing is the act of attempting to obtain personal information through the use of social engineering. Common phishing schemes/methods include: fraudulent e-mails in which the sender tries to impersonate an entity of authority (we’ve all received these sketchy e-mails before) and websites registered under the misspelling of a popular domain. In the world of crypto, it is essential to be attentive to schemes like these as it is much easier to fall victim than you may think. The anonymity of crypto alone makes it very appealing to hackers & scammers. You should always be on the lookout for fraudulent schemes.
Some preventative actions you may want to consider taking:
  • Creating a bookmarks folder of all the popular crypto-related sites you visit
  • Creating email inbox rules to distinguish trusted entities.
  • As a safety precaution, ensure you have authenticator enabled throughout all your crypto-related accounts with the security keys kept in a safety deposit box.
  • Use a hardware wallet to store your cryptocurrency instead of keeping them on exchanges (I’ll touch more on this later)

Funding Your Coinbase Account

Congratulations, your Coinbase account got approved! You can now start funding your account… or so you thought.
Upon your first cryptocurrency purchase with Coinbase, it is very likely your bank will automatically flag the purchase as fraudulent. If this happens to you (which it most likely will), you will need to call up your bank and let them know to let the purchase go through.
Once you’ve taken care of that, buying and selling cryptocurrency is relatively self-explanatory. Just go to Buy/Sell in the menu and choose which currency you’d like to buy/sell as shown below.

Funding Limits

Coinbase has weekly limits as to how much cryptocurrency you may purchase. Your limits will not start out this high but increase with proper verification and the longer you have an account.
Weekly Buy Limits
  • Cash: $100,000
  • Bank Account: $25,000
  • Credit/Debit Card: $7,500
Weekly Sell Limits
  • $100,000
Credit/Debit Card and bank account purchases are both instantaneous, however, for bank account purchases, it'll take 5-7 business days for you to see the charge in your account.
For information see:


There’s three distinct fee’s you will encounter with Coinbase.
  • Conversion & Exchange Fees: These are fees you’ll encounter through the buying, selling or exchanging of crypto. A fee is charged when you convert fiat to crypto.
  • Transfer Fees: A fee is charged if you’re transferring crypto to a different wallet (IE: Crypto Binance). Note that if this wallet happens to be another Coinbase wallet, there is no fee.
  • Mining Fees: These's are inherent fee's you'll encounter with any sort of crypto transaction. Mining fee's will also change depending on which cryptocurrency you are purchasing. I don't want to delve to much into the technical aspects as to why this is (as it can get very technical). I'll have to save this for a later post.
Note that the Bitcoin network is notorious for insanely high fee's. Purchase and transaction fee's upwards of $50+ are not uncommon during periods of high network congestion. Using Bitcoin to purchase something like a cup of coffee is completely trivial, and as we advance forward into the space, it's becoming more apparent that Bitcoin's main use case will be that of a digital gold rather than a global payment network.

Lowest Possible Fee With Coinbase

If you're going to be making large crypto purchases through Coinbase, ideally you'd want to get the lowest fee possible. I have found that the best way to do this is by your linking a bank account rather then by purchasing through debit/credit card. See photo.
  • Funding via bank account: 1.46% fee
  • Funding via debit/credit card: 3.83% fee
See photo.
As you can see, both allow instantaneous availability of funds. However, it'll take 5-7 business days for the bank account transfer charge to appear in your account.
Note: The fee you receive will also depend on how large of an amount you are purchasing. Expect fees to be a bit higher for smaller purchasing amounts and lower for larger amounts.

Fees Continued

It's important to know that fees will change depending on what country you're from and what cryptocurrency you happen to be purchasing. For more information on Coinbase fees I highly recommend visiting their fee disclosure page.

Avoiding Coinbase Transfer Fees Using GDAX

There is a bit of loophole to avoid Coinbase transfer fees. This is done through Coinbase’s advanced trading platform known as GDAX. It looks intimidating, but it’s a lot easier to use than they make it seem. Luckily, as Coinbase user, you technically already have a GDAX account. Simply follow the sign-up steps for GDAX, and you’ll find your information pre-populated. No need for long wait-times for verification etc.
To mitigate Coinbase transfer fees, send your money: Coinbase - GDAX - wallet of your choice

Sending & Receiving Cryptocurrency

Sending and receiving crypto with Coinbase is super easy…


Go to Accounts in the menu, look for the currency you’d like to send, then click Send. A prompt will come up instructing you to put in the recipients address and the amount you’d like to send. Ethereum example.


Go to Accounts in the menu, look for the currency you’d like to receive, then click Receive. A QR code and random string of numbers will appear. That random string of letters & numbers is your wallet address. This string is what you’d give to someone if you were looking to receive crypto. Your wallet address is also crypto specific. This means that if you try to send Litecoin to your Bitcoin wallet address, the transaction will fail.
Random LPT: If you’re ever needing to transfer a large amount of crypto to another wallet, I recommend sending a test amount which is basically just a small amount of crypto. If said small amount appears in the wallet, you know you have the correct address. If not… you may need to just wait a bit longer and hopefully it will appear, or you’ve sent it to the wrong wallet address.

Securing Your Cryptocurrency

There are many ways you could go about securing your cryptocurrency. I’m going to discuss two.

The Vault

The Vault is a feature Coinbase offers free of charge to safeguard your funds by adding multiple layers of security. With the vault, there is a designated time frame for withdrawals. This helps to safeguard against hackers getting into and emptying your account. Additionally, you can have other people (or email addresses) needed to confirm these withdrawals for an added layer of security.
Warning: The vault is a feature you should use if you are planning on holding your cryptocurrency for a longer period of time. It is not recommended if you are looking to turn quick profits through buying and selling often due to the 3 day waiting period for withdrawals.

Ledger Nano S

The Ledger Nano S is a cryptocurrency hardware wallet. It allows you to store your cryptocurrency in physical device akin to that of a USB drive. You would then ideally keep this in a safe at home. This is my personal preferred method of storing cryptocurrency because I don’t have to worry about hackers potentially gaining access to my cryptocurrency online, rather, that security falls into my own hand. I just have to make sure I don’t lose or damage my Ledger, and even if I managed to do that, there is a 16 word recovery phrase provided by the Ledger in the event of a lost, damaged, or stolen Ledger. As long as you have the recovery phrase, you can recover all your cryptocurrency.
So after purchasing crypto through Coinbase, instead of leaving my digital goods on the exchange, I transfer it to cold storage (which is another word for hardware wallet IE: Ledger Nano S).

My Primary use of Coinbase

I primarily use Coinbase as an easy access point into the crypto world. Coinbase makes it very easy to purchase the largest of cryptocurrencys and once you have access to these, you can start purchasing more niche cryptocurrencies such as Ripple, EOS, IOTA, NEO, etc... You would do this through the use of much larger exchange such as Binance.
You cannot directly convert fiat to crypto with Binance yet. So in order to fund a Binance account, you need to convert your fiat to crypto through an exchange that allows you to do so, (this is where Coinbase comes into play) send that crypto to your Binance account, then make a purchase.
The way I go about doing this is:
  • 1st I purchase Ethereum through Coinbase. I purchase Ethereum instead of Bitcoin, because as I mentioned before, Bitcoin is notorious for insanely mining and transaction fees. Ethereum has much lower fees.
  • 2nd I send said Ethereum to my Binance account
  • 3rd Once I receive that Ethereum on my Binance account, I make my niche cryptocurrency purchase through the Binance exchange.
I have a step-by-step guide that details out this process. You can view it here.
PHEWWWW. That was a lot of words... Anyways, I hope this was beneficial to you crypto newbies out there. I plan on making more tutorials like this in the future :) If you have any questions, just leave them in the comments sections down below. I’m sure either myself or the community would be able to respond.

Related Links



submitted by MrCryptoDude to CoinBase [link] [comments]

My attempt at an ELI5 for cryptocurrency to help my friends.

This is a long one so fair warning and no there is no tl;dr. I've only been at this for about 6 months and worked up this paper the other day for my friends who are interested but know very little about this. Hopefully whoever reads this can make in corrections as I am far from an expert.
Cryptocurrency, Bitcoin, Ether are all blockchains. Blockchains are basically a spreadsheet (LEDGER) that is duplicated multiple times across a network and updated regularly simultaneously. There is no centralized version of this ledger. It is hosted simultaneously by thousands/millions of computers. These ledgers will update on their own, Bitcoin as an example automatically checks itself every 10 minutes. Each of these 10-minute increment of transactions (in bitcoins case transactions would be sending or receiving bitcoins from one person to another for goods or services) are called BLOCKS. For these blocks to be confirmed, accepted, and updated to the ledger nodes are required.
Nodes (Mining/Forging)
A node is a computer running the blockchain software on the network. The blockchain software will automatically download the entire ledger of all transactions since its inception. At regular intervals, the software will take the transactions of a block (data on the ledger) and convert them into a mathematical puzzle to be solved by randomly chosen nodes (MINING). Mining requires powerful processors (typically GPUs) and substantial quantities of energy to receive mined tokens profitably. When a specific number of nodes solve the puzzle with the same answer they are basically confirming that the data on the block is accurate as multiple independent nodes found the same answer. When confirmed, the block gets added to the previous blocks making a chain of blocks aka a blockchain. As an incentive to run your computer as a node you are rewarded with TOKENS. If a single person or group of people wanted to manipulate the ledger, the amount of machinery and electricity used to achieve the majority of miners thus allowing you to manipulate the ledger is so exponentially expensive that it serves no reasonable purpose. This is an example of a Proof of Work Blockchain System (computer solves puzzle and rewarded with tokens)
Tokens are part of the core of the blockchain. They are an incentive to validate transactions and create blocks. They gain intrinsic value based on the blockchain they are associated with. Some blockchains grant token holder’s different abilities. With Bitcoin, tokens are needed to pay for transaction fees. Others allow voting rights on how certain blockchain functions are managed. There is a limited amount of Bitcoin that will ever be released to nodes (21 million expected to be all be released by 2033) which also keep inflation from being a problem. Blockchains can create their platform with whatever number of tokens they would like and release them or create means to mine them as they see fit. Essentially, as with any other fiat money (currency that a government has declared to be legal tender NOT backed by a physical commodity), as adoption and trust increases the value of the token will increase. If most people accept Bitcoin for services and stores accept Bitcoin for goods than it is as good as the next currency.
Whether you mine for tokens, are paid in tokens for goods or services or purchase tokens from a person or currency exchange you need a place to store them securely and a way to send and receive them. Cryptocurrency Wallets don’t store currency, they hold your public and private keys that interface with the blockchain so you can access your balance, send money and manage your funds. The public key allows others to send money to the public key only. A wallet that is "offline" (see Hardware or Paper below) cannot access funds or send money unless it is accessed with another form of wallet, either desktop, online, or mobile.
1) Desktop Wallet - Installed on your computer and are only accessible from that SINGLE computer. Very secure but if someone hacks your computer you are exposed. 2) Online Wallet - Run remotely (cloud based) and are far more convenient to access but make them more vulnerable as they are controlled by a third party and are also vulnerable to hacking attacks. Exchange wallets are online wallets but you are not in control of the private key. View it as a wallet that is lended to you so you can trade. The wallet is technically not yours. 3) Mobile - Ran on an app and are useful as they can be used anywhere including retail stores 4) Hardware - Private keys are stored on a tangible device like a USB drive. They can make transactions online but they are stored offline. Compatible with web interfaces and support many but not all currencies. To use, plug into a computer, enter a pin, send currency and confirm. Safest form of storage. 5) Paper - Basically a physical printout of your private and public keys. It is not stored online anywhere and the only way transactions can happen is if you transfer money with the help of an Online wallet.
Example of a Public Key = 1A684DbsHQKPVCWgaUsYdF4uQGwTiA9BFT Example of a Private Key = E9873D79C6D87DC0FB6A5778633389F4453213303DA61F20BD67FC233AA33262
Most wallets provide a Recovery Mnemonic Passcode that is a series of words (typically 12 to 24 words) in a specific order. If you lose your login information for your wallet you can supply the mnemonic passcode and retrieve your lost login information. If you lose your login information and your mnemonic passcode your wallet will be inaccessible and your tokens are lost to you. The above basically describes a first generation Blockchain Cryptocurrency such as Bitcoin. It is used basically as currency with no centralized entity regulating the release of additional currency and keeping the ledger of where the money is going secure and extremely safe from manipulation.
Second Generation Blockchain
The second generation blockchains sprung out of this environment with something more valuable. Utilizing the blockchain system to allow applications to be ran on top of a decentralized secure system. Instead of just recording transactions, contracts could be transmitted the same way. More complex transactions (SMART CONTRACTS) allow for things such as: - Funds to be spent only when a required percentage of people agree - Manage agreements between users (such as insurance) - Provide utility to other contracts - Store information about an application such as domain registration information or membership records This basically can allow applications to be ran on top of the blockchain system. This can cut out the middleman for many real-world applications (mortgages, banking, communications, security confirmations etc.)
Proof of Work/Proof of Stake
As I mentioned earlier, Proof of Work (PoW) requires nodes to solve a mathematical puzzle which is rewarded with tokens. Proof of Stake (PoS) is different, the tokens with proof of stake systems are pre-mined meaning they are all created when the blockchain system is created. Blocks are not verified by the typical method. The block validator uses the blockchain software to stake their tokens and are chosen based on specific factors depending on how many tokens the person holds and for how long. Depending on how many tokens they hold will restrict the quantity of blocks they can validate. If they own more they can validate more often but all validators will be chosen randomly keeping the rewards fairly distributed (unlike PoW which typically reward the first completed.) The blockchain still requires a mathematical puzzle to be solved but it is much easier than PoW requiring far less time and energy. If the blockchain has premined all of their tokens then new tokens cannot be mined for rewards in PoS. The reward for staking your tokens to be a validator is a portion of the transaction fee that is charged as part of normal transactions on the blockchain. That is why PoS miners are called forgers. If manipulation is attempted than their stake can be taken from their wallet adding more motivation to prevent data manipulation.
Some cryptocurrencies may need to update or upgrade the coding of their blockchain software. When this happens usually a fork occurs. This basically means the cryptocurrency splits into two separate cryptocurrencies. Because the nature of blockchain technology, they are decentralized and autonomous so the older version cannot be deleted or removed. If people choose to continue using the old version they can. For mining/forging purposes the nodes will need to choose which they will mine/forge and download the blockchain software on their computer to proceed. When the fork occurs, anyone holding tokens in the original currency will be given the same number of tokens in the forked currency. (When Bitcoin forked to Bitcoin Cash, anyone holding x amount of Bitcoin would receive a new wallet for Bitcoin Cash also containing x amount of Bitcoin Cash.) This is called a Hard Fork and all previous transactions are made invalid. There are also Soft Forks, in this case it is backwards compatible and all previous transactions are valid. This can result in two currencies but in most cases, it doesn’t as it is usually accepted by most miners/forgers because it is backwards compatible.
Online currency exchanges allow you to buy, sell or exchange fiat money (USD, EUR, etc) with digital currencies or in most cases digital currencies for other digital currencies. There are a large variety of different exchanges that are operated in multiple countries but there are around a dozen that the majority of cryptocurrency trading volume are present on. Not all cryptocurrencies will be listed on all exchanges, some have specific prerequisites to be listed on their exchange and there may be fees associated as well. Once your account is set up you will have a list of all available cryptocurrencies to trade. Each currency will have an associated online wallet with the public key address allowing you to send that specific currency to that wallet. (Many exchanges are having delayed or canceled identity verification, currency transfers and lack sufficient customer support due to the influx of new traders) Examples of top exchanges: 1) Coinbase (trades fiat) 2) GDAX (trades fiat) 3) Gemini (trades fiat) 4) Changelly (trades fiat) 5) Bittrex 6) Binance 7) HitBTC 8) EtherDelta 9) Bitfinex 10) Kraken 11) Bithumb 12) Bitstamp 13) Poloniex 14) OKEx
Sending/Receiving Tokens
All wallets have the ability to send digital currency to other wallets. The function is relatively easy, make sure the currency you are sending is going to the appropriate wallet for that currency. Ethereum tokens cannot be sent to a Bitcoin wallet for example. (The tokens aren’t actually moving location; the list of transactions/ownership is what is stored in the wallet). Triple check the wallet private key you are sending the tokens to. If you type the wrong address the tokens will be lost in nearly all incidents. Some mobile wallets allow you to scan a QR code that will automatically enter the public key rather than copying/pasting or typing out the public key.
As of January 1, 2018 it appears that taxing on digital currency has changed. Every trade between any digital currencies (Bitcoin to Ether, Ether to Litecoin etc) will be a taxable transaction. If you hold the currency for longer than one year than you will pay capital gain tax when it is traded or sold (15%-20%) and if you sell or trade in less than a year you will have to add the profit to your taxable income to adjust your tax bracket.
Altcoins are basically any coin that is not Bitcoin. Most cryptocurrencies do not have a native blockchain (their own independent dedicated blockchain). Bitcoin, Ether, Ripple, Waves, NXT, Cardano all have their own native blockchain. Many other cryptocurrencies run on other cryptocurrency’s blockchains. Litecoin runs on Bitcoins blockchain, hundreds run on the Ethereum blockchain. These currencies act as smart contracts running on the adopted blockchain.
DApps (Decentralized Applications)
For a blockchain application to be considered a DApp it must be 1) Open source, code available to all 2) Decentralized, uses blockchain cryptographic tech 3) Incentive, must have tokens to fuel itself 4) Algorithm/Protocol, generates tokens and has a built-in consensus mechanism (mining/forging.)
There are 3 types of DApps, each basically piggybacks off the platform of the previous Type 1 – Have their own blockchain (like bitcoin) Type 2 – Use the blockchain of Type 1 DApps Type 3 – Use the protocol of Type 2 DApps
ICO (Initial Coin Offering)
Much like an IPO (Initial Public Offering) that offers stock in a private company to the public, an ICO raises money for new Cryptocurrency ventures. Typically, a minimum investment is required in the form of a cryptocurrency such as Bitcoin or Ether and the investor is given tokens of the cryptocurrency at a reduced cost. Due to the fact that ICO’s are so new, government agencies have not begun regulating these ventures making them extremely risky as anyone with a competent coder can create and market a cryptocurrency that can be used to swindle investors who aren’t cautious. The US government no longer allows its citizens to participate in ICO’s and if you are using a computer with an IP address located in the United States, ICO’s websites will not allow you to invest.
1) Whitepapers – Each cryptocurrency will have their own dedicated websites and most will have a whitepaper that has a description of what their cryptocurrency is designed to do. 2) Roadmaps – Also on each cryptocurrency’s website, they tend to have a roadmap or timeline as to when they are planning to complete certain milestones be it added features to the blockchain or wallet or any other important events. 3) – List of every available cryptocurrency, the exchanges they trade on, market cap, trade volume, available tokens, newly created tokens etc. 4) (cryptocurrency subreddit) – Subreddits focused on cryptocurrency as well as specific subreddits focused on individual cryptocurrencies. Be cautious as many people on these sites are uninformed and/or are trying to manipulate the market by fooling others to buy or sell based on fraudulent information. 5) – Forums specific to individual cryptocurrencies. There is a lot of self-marketing (bounties) on this site. Take what they say with a grain of salt 6) TwitteFacebook (Social Media) – Many times news from team members or the cryptocurrency’s social media page will break news before it is listed on any of the above-mentioned outlets. Find out who is working for the cryptocurrency you are interested in and start following the team’s social media. Don’t forget to look at their linkedin accounts if available, previous employment and behavioral history to confirm they are competent. 7) Github - Code from projects can be uploaded here and reviewed for issues and revisions.
Common Terms/Slang
Shilling – covert advertising, personally endorsing a token so as to manipulate the price to either recoup a loss or increase gains on a token the individual owns. FUD – Fear, Uncertainty, Doubt; another method to manipulate the price of a token the person owns by making others second guess their investment decision on a specific token. FOMO – Fear Of Missing Out; buying a token (usually after the price has already increased) hoping they haven’t missed the majority of a price increase. Shitcoin – A cryptocurrency that has become worthless overtime or a scam operation. To the Moon – Massive increase in a token’s price.
I'm sure there are probably revisions to be done on this as I am still getting my head around all of the concepts. Any help to this would be appreciated.
submitted by Truantlife to CryptoCurrency [link] [comments]

Backup Wallet.dat

"1) I can backup my wallet by exporting a wallet.dat file. Do I have to do this everytime I receive more BBP? Or just whenever I add a new key? 2) How do I add new keys? 3) Can I generate and see the private key so that I can write it down/print it and store it somewhere safe?" -znffal
1) think of your wallet.dat file as your passbook in a passbook savings account. You have to have that .dat file to be able to access (and prove you SHOULD have access) to the BBP stored in your account addresses. Exporting it once is all you need.
2) Adding new keys? The passphrase (password) you use is the only "key" you would have in an encrypted wallet (besides the .dat file). If you mean new addresses, you can get those by going under File and Sending (or Receving) Addresses and hit "new".
3) Clicking Encrypt Wallet will be where you choose a passphase, I don't know you can see it other than when you enter it.
To put a real world example or two.
Example One: You don't ever encrypt or backup your wallet. If I borrowed/stole/hacked your computer, I could send all your coins to my wallet (no passphrase).
Example Two: You encrypt your wallet with the passphrase "secret" but don't backup the wallet.dat file, then your computer crashes and you lose all your data. Since you didn't have a copy of the wallet.dat file, your coins would be lost.
Example Three: You backup your wallet.dat but don't encrypt it. Your computer crashes and all your data is lost, but you re-download the QT program, restore your wallet.dat, all your coins are still in you wallet. But if you lose your USB drive that has the wallet.dat on it, and I find it, I can put your wallet.dat on another computer and send all your coins to my wallet.
Example Four: You encrypt your wallet and back up the wallet.dat file. If I hack/borrow your computer, unless I guess your passphrase your coins are safe. If you computer crashes, your can restore your wallet.dat file to another computer and your coins are safe.
In short, Encrypt your wallet (passpharse) and then backup (copy) the wallet.dat file to at least two locations." -616westwarmoth
"Find your wallet.dat file, copy it to a flash drive or any other secure place. If your computer crashes, you'll always have the wallet.dat and can put it on a new machine. It will have to resync a bit when you do, but you'll never lose your "key" to the wallet. Speaking of keys, you should password protect your wallet and make sure to remember it!"
"Yes you must have a copy of the wallet.dat somewhere. So multiple back up copies are a good idea. If you lose the wallet.dat file the coins will be in limbo but there will be no way to recreate the file. One thing to remember is it doesn't matter if the wallet.dat file is "current", it can be 10 years old on a flash drive and you can download a new client, put the wallet.dat file into the machine and you'll be good." -616westwarmoth
"In addition to this, whenever you reboot the node after more than 24 hours of being synced, we back your wallet.dat up into the "backups" folder. This is useful if you ever accidentally delete your wallet.dat.
Also, if you want a paper backup, you can do a 'dumpprivkey accountaddress' command from the RPC." -Rob
"wallet is a collection of private keys"
"there are other ways to achieve high security. You can make a new wallet, encrypt it with a long password, send coins to it, put it on a flash drive and put it in cold storage, then download the hard drive cleaning program and erase the wallet.dat sectors from your PC. And of course, keep a printed copy of the private key on paper and put it in a safe. Put the usb in the safe also. Burn a cd rom with the wallet.dat file and put it in the safe." -Rob
How to safely back up your wallet
Keep Your Crypto #SAFU (CZ's Tips)
To Read:
NOTE: As of version we have updated to HD wallets, so you should not need to worry about keypools anymore if you have upgraded
"Regarding the Sanctuary, you receive payments always to the same address (key), so the keypool is not consumed for those payments. But when you click to generate a new address on the "Receive" tab, one key will be deducted from the keypool. Also, sometimes new addresses are automatically generated and the keypool is consumed, for example when solo mining and finding a block, a new address could be used for the block reward.
You can always check your current keypool size by typing "getwalletinfo" in the RPC console and see "keypoolsize" and "keys_left". It's only concerning if they are a low number and you plan to generate new addresses in your wallet. They start from 1000. If the number gets too low, you can just type "keypoolrefill" to refill them back to 1000 and then you should backup the wallet. But from my experience the wallet automatically refills the keypool from time to time (or after certain actions like transactions), because I see that my wallet file keeps getting larger and the "keys_left" returns to 1000.
The only issue is if you actively use your wallet on multiple computers (for example cloud mining or simply sometimes using the wallet on your laptop), then one wallet could refill the keypool with new addresses and the other one will not, or they will generate different new addresses. If I understand this correctly, for example, you could receive a payment on a new address generated in one wallet; your old balance will be there on both wallets, but only the one wallet where you generated the new address would show the new payment. Then you should copy the wallet.dat file to other computers, to update them.
If you use the wallet on just one computer, you should just backup the wallet from time to time (or when you see it has increased in size). Qt also backups wallet.dat automatically, those can be found in the folder %AppData%\BiblepayCore\backups, you will see that they also have timestamps in their names and possibly different sizes." -inblue
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Bitcoin Miner Überblick (2019) - die Profitabelsten

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