Hi folks

I am looking for a good book about WebGL, not only for beginner but a very good one.
I found the book below in amazon site :
Professional WebGL Programming: Developing 3D Graphics for the Web ,
author Andreas Anyuru
It seems it is a very basic book , and , comparing with some webgl tutorials, sounds there are some lacks of information.

So, I would like verify your opinion.

Thanks in advance

Abimael