This book offers a clear, easy-to-understand introduction to the core concepts of Web3 and blockchain technology, setting the stage for anyone looking to dive into the development of decentralized applications (dApps). With a focus on Ethereum blockchain, node infrastructure, wallets, and key management, it lays the essential groundwork for secure and efficient Web3 development. This book explores Web3, a decentralized web powered by blockchain technology. Discover Ethereum's role and tools for building Web3 apps as you dive into DeFi, NFTs, and deploying apps across blockchains. After reading this book, you will be able to unveil the potential of AI integration in Web3. Imagine a web where control is not centralized but distributed across many computers. You will learn Ethereum basics, transaction processing, and node functions. You will be able to securely manage digital assets with crypto wallets and utilize tools like Truffle and Hard Hat for smart contract development. The book teaches how to deploy apps across blockchain networks and understand AI's role in enhancing Web3.