I have the book. It appears to be a selection of tech articles from various magazines. It is exceptionally good for the beginner to intermediate nitro guy. It also adresses a bit about port timing, which I consider something not normally considered by most hobbiests, so it goes a bit further than most hobbiests require, but not much.

In my opinion, any book that gives details on something your interested in is worth owning. Momentary interests are often best served by internet research.

I keep my copy of the book in the bathroom. I don't have internet in the bathroom....LOL.