This book is a step-by-step method to achieving correct form. Jamey addresses the need for relaxation, awareness of tension, and other subtle details often overlooked. Much of this information can be found else where but not in one single book. I would rate this book a five-star but there is a concern that I have.
I disagree with one aspect Jameys left hand form. In almost ever picture of his left hand his wrist is bent. Jamey never explains the importance of keeping your wrist strait, I have a friend who allowed their wrist to bend uncontrollably and can no longer play do to carpal tunnel.
If you purchase this book, I would highly recommend you buy Pumping Nylon by Scott Tennant. Pumping Nylon covers close to everything that Jamey missed or saw out of the scope of his book.