Instruct: Classify Amazon reviews into positive or negative sentiment
Query: very interesting and detailed ski instruction

I have read this book with great interest after reading Harold Harb's book. This covers every aspect of ski technique, and gives a person a lot to think about, and to apply to their own skiing. Very worth while book and I would definitely buy it if you are at least an intermediate skier. I don't think this is going to necessarily help a beginner, although, if they are hungry for knowledge it would be worth reading. Covers a lot of info on tuning, boot fitting, skis, etc..