I am not a professional mechanic. I am kind of a shadetree/driveway mechanic, so don't take anything I say here as the Gospel. These are notes, comments, and information I've found to be useful and think others may as well.
That said, I'm a small-time specialist on this car simply because I've had to be. Some things (the tranny rebuilds, paint, and things I never could diagnose myself) had to be done by the pros. But a lot of smaller things, like replacing the brake vacuum tank, working on the ignition, replacing the fuel tank senders, and the head gasket, were things I had to do myself because I'd go broke sending it to the shop every time something happened. The car bleeds my bank account badly enough already.
Stuck Aerial Diagnosis and Repair
A note on Camshaft Bearing Caps
Brake Light Switch Modification
Common Air, Fuel and Oil Filter Numbers
Inside the Ignition Amplifier Module
The Running the Car out of Gas Fiasco (aka Ignition Lock)