Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Skillful, Exemplary

The brevity of this effective, perfectly edited swimming manual is sweet indeed. Not one word too long, it will teach you to swim better than you ever have before, teaching you the fundamentals of freestyle, improving your freestyle, and then using a goal-oriented drill program, developing the four main strokes of swimming (freestyle, breastroke, backstroke, and butterfly). It touches on strength training and the brief nutrion chapter, which basically says, if you eat garbage (empty calories) insteady of health food (fruits and vegetables) is better than a lot of popular nutrition books I've read. Practical, resourceful, and knowledgeable, the books is truly like having a coach right there.