The book will work instead of a freediving instructor, even if we are afraid to say so. Not only does the manual cover everything that a freediver must know about physiology, physics, techniques and safety, but it also contains a practical training guide given by the one of the best, for those, who want to experience the athletic side of the sport.
I went beyond -40 m. in constant weight, 100 m. in dynamics and 5:30 in static, before I met my first freediving teacher. I was exacting student, but my teacher was the great one, he gave me the knowledge structured and detailed in the very same manner how you'll find in the book.
Analyzing the chapter about training I found that my techniques are very similar to those described in the book, though I spent years looking for some of them! For a beginner I would recommend to read the book instead of inventing things that are already there. This great book helps me to reorder and complete the structure in my mind.
I would recommend the book to all the people who love freediving or want to know what freediving is.