I've read it.
First and foremost, it is an AP book. There is a section on tourney play, but it is mainly focused on AP.
If that is the type of book you're looking for, then sure, pick up a copy.
If you've read a lot of AP books, you know that often the subject is presented so dryly that it's sometimes a struggle to read. One of the things I think Dave does well is that he presents the information in a fashion that's entertaining enough that you want to keep reading the book.
Check it out, it's a good read.