Having both a hybrid and a road bike i needed a book for general maintenance that would cover the essentials for both types. This book does that. It covers the steps for various brakes, wheels and gear adjustment as well as other stuff like a bottom bracket and even adjusting a seat post.
What you can't see on the internet is the size of this book - it's only about 12cm tall and so is a real pocket size which could be easily fitted in a pannier if you tour or commute.
The pages of the book which i was particuarly looking for were the maintenance schedules - weekly, monthly and yearly. Each shows what you should do in simple steps to keep your bike running well.
Highly recommended, particularly for beginners