Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Galt wrote the textbook on Spades

I've been playing spades over 14 years. I have won many live and online competition and playing in many professional tournaments. I also teach spades to intermediate players looking to become advanced players. I reccomend this book to all of them. It is an excellent source to the knowledge of the strategical and logical approaches to the game. The strategies he covers are widely used by advanced players and his sections on last hand bidding are the best I've ever seen in print. It is a great stepping stone and guide from begining spading to advanced spading. The greatest thing about Galt's book is that they way it is written, it brings intermediate players up to speed on what they should be doing; then opens the door to a world of endless strategies and improvement in ones game.