Good book. Wish it had more characters though. But it's very helpful. They have guides for the 5 core Autobots and Megs and Screamer. I hope they do more in the future for guys like Lugnut and Blitzwing. One of the best art books I own in my opinion.
Out of curiosity, what sort of process does it use to teach? Does it use a 'boxes and cylinders', framework kind of approach, or is it more like 'here's how to copy this picture of Bumblebee'?
That sounds good, then. I can't stand how-to guides that are basically "copy this line, then copy this line...".