Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very Informative but might be a little bit outdated.

There is no need in saying that this book was very informative. That is given by the other reviews found here. The only problem I had was that the events in the book happened nearly twenty years ago. This however doesn't impede on the books ability to be very informative on its own. For more up-to-date information, one could visit the FFL forums and ask some questions there.