In Reply to: e30 M3 shop manual posted by rggm3 on April 13, 2000 at 12:06:51:
The Bentley manual covers the entire e30 line and is a good source for those things which all cars have in common: brakes, a/c, sunroof, transmission, etc. Its details on the specifics of the s14 engine are a little thin for most however.
The Koala Motorsports CD is a great idea. I've heard nothing but good things about it but I don't have it.
I'd definitely get the Bentley manual. Koala's product would be a great add'l reference. Then, if you really get into detailed work, you'll want to try and track down the factory manual, or a copy thereof.