If you're a motorcycle enthusiast and you like to work on your own bike, this is the book to have! It tells you just about anything you may ever have wanted to know about working on your bike and more importantly, how to set it up properly. It goes through everything step by step, but not in a dummies fashion. The writing is straightforward, entertaining and best of all fact filled. I would call this the bible of dirtbikes. Now that I have it, I don't leave home without it.
By the way, I don't know the author, I just bought the book because a professional mechanic I met on the trail told me about it.