Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Must Have for Any Gearhead

I owned an old Trek 800 for 8 years, and rode it until the wheels fell off. I never did much maintenance on it, and I told myself that when I upgraded to a new bike, I would learn to do the maintenance myself. Well, I got that new bike, and have been keeping it in pristine condition because of this book. I highly recommend it. It's entertaining, informative and easy to follow and find what you need.