This is by far my best educational book that demystifies and explains step by step the progress of hypnotic phenomena.
If we can find some questionable choices of layout (a little yellow paper securities sometimes below), the background is extremely clear, precise and structured to try to unravel the mysteries of hypnosis.
... And if I use the word "attempt" is not compared to this book, it's just that even regular use this wonderful tool called hypnosis, he always keeps an element of mystery that fascinates both the subject that the operator (the hypnotized the hypnotist)