This book also adds extensive knowledge as a reference in trading. Before entering the trading room, one of the places to gain knowledge is from books, although tutorials from youtube are easier to listen to, but according to your own beliefs should also know trading techniques from other places such as books. And books are written by people who are already professionals with the market.
Yes reading books is good for us who just enter trading world but it would be better if we have some friends in specific what the things we trade, for example I got friend who good at stock but I couldn't use his technique/method in my crypto trading when I try it, it's not like what I'm expected. So it's same for the book we're looking for if it's a book that guide you about trading in crypto space then better use it if you want to learn about trading in crypto.