The book has a fairly comprehensive approach of what a "mentalist" is rather tell a student of social art in order not to scare some. The base is there: handling course, nonverbal communication, cold reading and a certain philosophy of life.
Anyone who has a thirst for knowledge and a desire to improve should take the time to feuiller this book. Especially beginners will discover a new world while used / experienced rather see revisions and exercises to train -> It just will not be read, you have to test! Any theory must be tested and experienced, otherwise why does it exist?