Table of contents Welcome Blockchain Introduction Wallet Transaction Consensus Web3 Introduction DeFi NFT Ethereum Concepts Transaction Event Gas Tools The Graph Ethers.js EtherScan HardHat Alchemy Openzeppelin Defender Chainlink Automation Smart Contract Solidity Patterns & Best Practices Test & Deployment EVM Middle Layer Private Key Management Event Listener Bot Testing DApp What is Dapp Wallet Connect Connect to Wallet Transaction Interaction