Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Treatment of Critical Positions

Moreira has written a comprehensive treatise on one of the basic positions in BJJ. While all techniques are demonstrated with a Gi, enough are viable for no-Gi competition to make it worth while for those type of tournaments as well. When I go through BJJ and grappling books I scan it to see which techniques would be interesting to try and then go on the mat to try them. I marked enough in the book to make it a bargain. It's a good complement to any of the intermediate books on the market.