This book is a fair primer on poker on it most basic level, but chances are if you're buying the book, it's because you've been watching WPT and are already familiar with the game to some extent.
If you're really a beginner, this book is a fast read and will get you started, but please don't end your education here. There is very little in this book on theory, and important topics, if addressed at all, are not covered in depth. There are a few good stories, and there's plenty of advertising reminding us to watch WPT on TV and, of course, to play poker online at the site that Mr. Sexton endorses (and in which I believe he has some ownership). He reminds us over and over how GREAT it is to win! NO DUH!
If you really want to learn about poker and take your game to the next level(s), get your hands on anything by Sklansky. Read them all. Cover to cover. Twice. Then again. It will take a long time to absorb it all, but it will be worth it. When you do, you'll then have to decide what style of play is best for you. For example, I found it discouraging that Mr. Sexton advocates the "fit or fold" strategy on the flop, only to read Sklansky tell us that "fit or fold" is "terrible advice."
Buy this book if you must (it's a light read that you can knock out in an afternoon), but know going into it that you're not even scratching the surface of what poker is all about.