Reading "Growing Mushrooms the Easy Way"

I am reading "Growing Mushrooms the Easy Way" by R. Rush Wayne, Ph. D.

It is not quite what I had hoped for. The book is really small. Some of the information is already on the web site. It is a little general. I would like a lot more diagrams and some more detailed explanation of this so that I could understand.

I would like to get started, but need a lot of things.