The author is undisputably a pro in Wing Chun Kung Fu, but in my opinion, the book itself does not really have much practical use.
The photographs of techniques and drills resemble each other so much that I had a hard time telling them apart. In other martial arts books, I've seen the much better method of displaying a technique in all its phases, not just one picture taken at what the author considers to be the crucial moment.
Especially for beginners, which I still am myself, in a way, the pictures as well as the written descriptions are not very helpful. Don't get me wrong: you cannot learn WCKF from a book alone, anyway. However, it should be supportive by giving the workout practice additional depth, which this book hardly does.
The photographs of the 1st form are quite good, but very small, so in order to practice, you would have to make a blow up copy which I recommend to hang on the wall in the room where you practice.