I got books 2 and 3 in this set before I got this one, so I knew that there would be a lot of useful information for me to use. I make computers games and draw manga, and these are my favorite resources I use to figure out just how to draw an anime style character without making things look awkward.
This book isn't my favorite of the three I own in the series. It shows very throughly all kinds of brawling and physical hand to hand techniques, but I found there to be a lack of battle and action moves that involve weapons, which is a must for sci-fi stories and so on. Since 6 of 7 pictures on the front and back had weapons, I expected a little more instruction in that respect.
Another note would be that they show so many different angles of the same move (about 4 pages per pose) that it seems a bit redundant the first time through. However, since I see how knowing these angles is really nessecary for any kind of game with a 3d effect.
Things I liked about this book are the good descriptions of the important points. It's also easy to use the index or simply flip through to find what you are looking for because it's well organized. It's clear and easy to understand as well.
I actually do not use this series for cartooning, but rather for 3D computer rendering and animation. The entire set is the perfect reference guide for a computer animator/modeler. It's a must have series.