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I**A
It is very nice and understandable
Doesn't worth its price. The explanation for the most important technical topics are very perfunctory, without proper examples. Can you imagine an explanation of the blockchain algorithm work without a single code example? You can find it in this book. I also found some copy-pasting from official docs. After reading few topics about solidity I found myself reading the same chapter few times again and again because I couldn't understand it, and I decided to take a look at the official Solidity documentation. I found few paragraph copy-pasted to the book even keeping the punctuation. Very often you can feel that author is not a native speaker, and you struggle to get meaning of a sentence.So overall, my recommendations are:- if you want to learn Solidity, then just read official documentation. It is very nice and understandable, doesn't miss very important topics- if you want to learn about blockchain, then there are much more better books. I recommend the "Mastering the bitcoin" that has very interesting explanation with code examples. After that book you start understand how it works under the hood.- if you want to learn web3.js then may be this book is fine. But it doesn't cover how your Dapp will interact with your browser, so after reading this book I had to learn more from other articles and tutorials in order to use this skills in practise.This book gives you skills that you can't use in practise. Sorry.
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