Once you get past the poor production values, the spelling and grammar issues and various other errors, and once you get your head around (or even just skip...) some of the math-heavy parts, this book is a must-read for someone that wants to get past the low-intermediate level of modern NLHE. (If you are at those levels, I suggest my own book "Thinkin' About No-Limit" by the way..sorry!)
While I don't agree with everything presented here, at least if translated from 6-max to full ring live games, there is a lot of gold scattered through this book, and some pretty good examples (could use work in places though) and I like the overall logic and approach they use to present it.
Glad I didn't pay 2 grand or whatever it was, but I suspect that if/when I get back to playing live a few times a week it would quickly pay itself off. I still haven't "used" all of this yet, but am aching to do so as soon as possible at the low-limit games at places like the Mirage or local Indian joints around SoCal, where I know that this info would be extremely useful. Probably wouldn't at higher levels or playing in super-tough online games, but at games like I usually play it sure would.
The biggest problem with much of this advice is that it will increase variance a lot. It is obviously for people who multitable online first of all, so understand that. When you are playing 35-40 hands an hour, it can take a long time to recover from a few shoves gone awry, which this book (and others like it) treat as something you do left-and-right... so there is that consideration...as always, absorb info from many sources, not just one. This info, balanced a little for the games you play with some more traditional advice, is very valuable.