When this book arrived at my door and I began flipping through the pages, I was overwhelmed by the sheer number of techniques demonstrated. There are literally hundreds of submissions, sweeps, passes, escapes, ect. . .all in awesome color photographs, and from multiple angles. However, I still wasn't sold. It is quite easy to fill up a large book with flashy moves that don't work in competition, so I began a detailed exam of what was being shown. . .To my surprise, there were only a handful of flashy techniques. I found a couple that I am pretty sure I could never pull off (partly because of the nature of the move, but partly due to my own limitations), but for the part, the bulk of the techniques appeared to be legitimate moves. I already knew a lot of the techniques, but I think there was just a couple of moves where I did things exactly as Jackson does. For the most part, each move had slight variations from the way I did the move--and with all honestly, I feel many of these slight variations would make me more competent with the move. Good news, right? As I read more, I discovered the real golden nugget in this book is not the moves themselves, but how Jackson chains the moves together with other moves. For example, if you fail at this one technique, it creates an opening to go for this next technique. If your opponent defends that technique, it creates an opening to employ option 3. Personally, this is exactly what I needed. All too often I got for a submission or sweep, my opponent shuts me down, and I go back to a neutral position. It never allows me to catch my opponent off guard--and this is a major theme Jackson tries to show in his text. . .I haven't purchased all the books on grappling on the market, so I can't do much of a comparison, but in my opinion this book is really, really good. It might take quite a long time to learn all the techniques in this book (I'm talking years), but having too much to work on is a good thing.