Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The best trading book so far.

This is one of the best book on trading. I've read it for three times and I can say that I will read it again.Kroll talk about how the market discount news, how everyone has his own trading system, and also not forgeting the golden rule of cutting your losses short and letting your profit run.In short, if you have time for only one book on trading, this will be the one.