Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Book

The author provides a series of simple, powerful ideas that will be of great value to investors that are saving for retirement.His writing style is easy to read, the concepts covered are easy to follow and apply, and best of all, he provides specific advice on the investment strategies that you need to follow to succeed in today's stock market.Buy the book. It will be the best $20 you have spent in a long time.