Part 3.

You can think of part 3 as the core of the book. After learning all the foundation content in the previous parts, you’re ready to transition to real-world Ethereum. In chapter 9, you’ll become familiar with the wider ecosystem, which includes, among other elements, the Ethereum Name Service (ENS); decentralized storage networks, such as IPFS and Swarm; and oracle and other development frameworks. Then you’ll start to use professional development tools.

In chapter 10, you’ll learn how to test smart contracts with the JavaScript Mocha framework, and in chapter 11, you’ll improve the development cycle with the Truffle framework, which will allow you to easily compile, test, and deploy your contracts. Finally, in chapter 12, you’ll put everything together by building an end-to-end voting Dapp from scratch.

After completing this part, you’ll have achieved a major milestone: you’ll understand how Ethereum works, inside and out, and will be aware of most of its ecosystem. If you’re eager to build your own Dapp, though, I strongly encourage you to keep reading so you can learn the more advanced concepts in part 4.