i'm looking for a good online or print resource that can basically help me learn to do my own maintenance. myself and two friends are beginning the process of building fixed gears (just because we figured that would be the easiest start) in order to learn the ins and outs and to have reason to start purchasing the necessary tools. something with photos would be nice, as we're working with a pretty broad range of models and eras and are not familiar with all of them (we're currently stripping a bunch of frames for parts, and have already had some bumps in the road... like really stubborn old headsets).
any help is appreciated.

thanks,
adam