Caveat: I have known and worked professionally with the author, Joe Hall, for a few years, and found him to be highly qualified, extremely sharp, laser-focused, and very well-spoken. So naturally I had very high expectations for this book.
I was not disappointed... in fact I was pleasantly surprised!
Joe gives enough information so that those new to game programming can follow along and figure it out, but he does so without boring the more experienced reader. Buy it, read it, do it - it's fun!