Don't get me wrong, I'm a huge fan of Bruce, his films, theories, ideas and his life in general, but . . . .
It's a loose collection of notes which aren't very well put together, only Bruce himself could have done this book justice. I think you'll find that it goes against what he was about i.e. conforming something that has no form, he increasingly applies methods, something he wanted to avoid. I think he'd have sooner burned these notes than have them printed.
As I say, it has some good quotes from the man himself but there are some parts that I think were added just to bulk up the book. I was disgusted when I found that a lot of it was little move variations which had no relevance to the prior text. For example it goes from the principle of jeet kune do, to notes like- side kick high-left stance; side kick low-right stance. It all left me rather confused. Only buy it if your into Bruce Lee in a big way, otherwise get The Celbrated Life of the Golden Dragon, it well documents his career and life, and has some very good photos.