Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Overall a decent book.

The option Advisor is a decent book on options. It gives a good market view on options trading. However the Authors' monthly newsletter The Option Advisor, has a very bad track record. The Author offers a 3 month free trial to his newletter in the back of the book - be careful puting your money into these trades. One should track the recommendations over time, to see how they do before putting money into these trades.