Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Extremely useful and highly recommended

Read Sklansky and Harrington last month. Very good books and a must read for anyone interested in playing poker well. Have been playing dealer's choice poker variations for about fifteen years. Have been playing Hold'em, specifically, for about four months now.The Sklansky and Harrington books give you a lot of theory. They teach you how to think about poker. This book gives you all practicum, which is especially great for the beginner and intermediate player. The author provides very straight forward explanations for his decisions, and in the process reinforces proper play, while also discouraging improper play.This book is a great complement to the other two books mentioned. Will help reinforce the basics -- plays that we take for granted, forget about, and therefore get wrong under pressure. Highly recommended for anyone interested in learning solid basic game play, or for reinforcing the basics as well.