a blockchain book

The book is intended to serve both as a reference manual and as a cover-tocover exploration of Ethereum. The first two chapters offer a gentle introduction, suitable for novice users, and the examples in those chapters can be completed by anyone with a bit of technical skill. Those two chapters will give you a good grasp of the basics and allow you to use the fundamental tools of Ethereum. Chapter 3 and beyond are intended mainly for programmers and include many technical topics and programming examples.