Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nothing Groundbreaking

At first glance this book looked really good however, once I purchased it I found out that it was oversimplified. Mainly just pictures of patterned movements of where to strike an attacker, with no hope of replicating the movments in real life for the average person. The best book I have come across so far is Attack Proof by Perkins. Have a look at Attack Proof first before buying this one, you wont regret it.