Textbook in PDF format

Demystify the blockchain—and learn how to use it—with this practical guide. Start from the ground up: What is Ethereum? What is Solidity? And how are they used to create smart contracts? Then see how to implement your own blockchain, including configuring a peer-to-peer network, managing miner accounts, and more. Follow step-by-step instructions and detailed code examples to develop smart contracts and dApps. Work with cutting-edge technologies such as Bitcoin, DeFi, NFTs, and more. Welcome to the world of blockchain!
Master blockchain fundamentals and implement applications on the Ethereum network
Develop smart contracts and decentralized applications (dApps) with Solidity
Test, debug, and secure your blockchain applications
Blockchain Basics
You’ve heard the hype around Bitcoin, NFTs, and crypto mining. But how does the underlying blockchain technology work? Understand the fundamentals of the distributed ledger, and learn how to create and manage your own blockchain.
Application Development
Master smart contracts, from programming with Solidity to testing, debugging, deployment, and beyond. Develop decentralized applications (dApps) and expand them into a decentralized autonomous organization (DAO) by implementing a frontend with Ether.js.
Tips from the Experts
Follow guidance from experienced blockchain programmers. Use commented code examples as templates for your projects to get started building your own blockchain and smart contracts in the real world.
Blockchain basics and creation
Smart contracts and dApps
Development with Solidity
Testing, debugging, and security
Web APIs
Peer-to-peer frameworks
Accounts and balances
Transaction and block verification
Gas optimization
Decentralized finance (DeFi)
Non-fungible tokens (NFTs)
Yul and Huff contracts
Assembly is a low-level language that is very close to the language of the EVM. A low-level language in our context is a programming language that is close to the EVM and not very intuitive, and it does not provide any safety checks compared to the higher programming language Solidity. Thus, gas costs can be reduced at the cost of lower security, and it’s your responsibility as a developer to implement needed safety mechanisms.
Assembly can either be directly interwoven with Solidity (in which case, it is called Inline Assembly) or used on its own to communicate with the EVM. The main advantage of combining it with Solidity is that Assembly allows you to develop your own libraries that extend Solidity. Assembly can also be used to implement some functionalities that Solidity alone does not support. Arachnid, for example, has implemented a library for processing and manipulating strings that is much more effective than pure Solidity