Learn About Web3, Security and More
The world of web3 can be confusing, but it doesn't have to be. We put together a collection of resources to help you learn about web3, security and more. It covers the basics of web3 and then moves on to more advanced topics.
Basics
A crypto wallet is used to send, receive and store crypto assets. It is often also used to interact with smart contracts.
Tokens are digital assets that can be bought and sold. There are different kinds of tokens, like governance tokens or stablecoins.
NFTs are unique digital assets that can be bought and sold. Each NFT is unique, and cannot be replaced by another NFT.
Token Approvals
Token approvals are used to give permission to a smart contract to spend your tokens on your behalf.
Revoking token approvals is essential to maintaining proper wallet hygiene. Learn how to revoke them.
Testnet approvals are a common way to test smart contracts and applications before deploying them.
Permit Signatures are a way to grant approvals through gasless signatures.
Permit2 is a system developed by Uniswap to enable gasless approvals for every token.
Security & Scams
Scams are common in crypto and cause hundreds of millions in losses every year. Understand what to do.
Your seed phrase is the master key to your wallet. Once compromised, there is no undo button.
Malware can compromise your device in seconds regardless of your operating system.
Address poisoning tries to trick you into sending money to the wrong address.
Pig butchering tries to trick you into investing in a fake platform.
Recovery scams are advance-fee fraud that specifically targets prior scam victims.
Wallets
EIP7702 adds smart contract functionality to a wallet — batch transactions and more.
A cold wallet stores private keys offline, making it more secure than a hot wallet.
Learn how to add Ethereum and other networks to wallets like MetaMask.