This is a great book if you are interested in the more analytical and theoretical side of hypnosis and/or hypnosis used in therapy. -- A linguistic perspective. --
Volume I covers the model overall
Volume II goes a little more into dealing with incongruent clients, and a linguistic model of representation. [the 4-tuple, R-Operator and C-Operator]
THE GOOD -- [Although] It is not a very quick read... because everything in this book is actually useful. You will not want to rush through this one, and it is a book you will want to go back to. It does a good job covering the Milton Model, the language patterns and non-verbal communication.
This book is not for everybody though...
THE BAD -- Personally, there isn't anything I dislike about this book, but I do realize that some people have different interests and reasons for wanting to learn about hypnosis. First of all, this book is probably not for beginners. If you are, it would take a little longer to finish thoroughly. An book on Neuro-Linguistic Programming (NLP) that covers both the Meta-model and the Milton Model (consider "Introducing NLP", by Joseph O'Connor et al. -- it has a green cover) will provide a great introduction/pre-read to this book.