It's not an excercise book, but there are many important techniques clearly explained. This book will help you to see the importance of the "holistic" approach to Qigong. The author continually stresses the point that, if you want to optimize your Qigong practice, you have to start at the roots, which to him means learning to control your mind (Yi, Xin and Nian), breathing and body. He explains in good detail just how to do all that. And much, much more. Most importantly, he he tells us WHY to do these things.
If you want to know more than what you'll learn in the "how-to" books, start here. I think this book is ESPECIALLY important for teachers.
It's a fun book. The author has a very confident writing style and he's very good at making the esoteric side of Qigong seem like everyday stuff. I mean, he makes it understandable...
Six stars would be appropriate :o)