A good manual. This particular one is an early edition

This book has so much information that when you first open it, it can be intimidating…but that only lasts until you are in the middle of working on a bike, and you come up against a job you have not
done before. Then, having this book in your shop gives you the information that the professionals turn to and you are grateful for how detailed and comprehensive it is.
You can feel good about learning something new, AND that you were smart enough
to have bought the Barnett’s manual.
Most excellent reference.
I am a self taught hobbyist bike mechanic, and work alone much of the time.
Having a this book near to hand has saved me a lot of work and saved me from making mistakes out of ignorance.

Don’t waste your money on those paperbacks that clutter the sports sections of Barnes & Noble and Borders.
The Nashbar & Performance Bike offerings are just as inadequate.
By the time you’ve spent $10-$20 each on 2 or 3 of those anecdotal “manuals” with their “fits all” diagrams,
you can almost pay
the Books-for-everyone’s discounted price for this………..
………THE REAL THING.

Quite complicated. There is a lot here. Extremely comprehensive but perhaps there are slightly easier to understand books out there.

I like having the pages in front of me, the on-line version is great, but then your keyboard gets all messy…