Dont waste your money on this book.1. The book is not well organized or structured, poor editing.2. The content is DEFINITELY NOT worth 95USD. This book feels more someone's project than a book. Most of the information in this book can be found on the internet or from textbooks. There is nothing new or groundbreaking in this book.3. If the price of this book was 10USD, it will have been a good worthy buy but not 95USD.In summary, it is not worth the money at all. I strongly advise against buying this book unless its 10USD.0