This is a well written, in depth, great pictures, techniques are explained well, and all around good book. It appeals to both the novice/beginner level, and the more advanced jui jitsu player. If you are interested in starting jui jitsu or stepping your game up, you should get this and the advanced twister, which complement each other. I have been studying grappling/jui jitsu for awhile before learning the 10th planet system, and I wish I would have started with it. The whole system gives you more advanced options and opens the game to a whole different level. Do yourself a favor, and spend the twenty books for this book, it is totally worth it.