I highly recommend the download-able shop manual on this site. I have a cb500 and the shop manual has been nice for the few projects I've started on the bike so far. The clymer book seems pretty good, but it's good to have two sources because sometimes things aren't always clear. Also, there are a couple of different wire diagrams for download that are really helpful.
I here you about the money thing. I already have $400 worth of stuff that I want to get for my bike, but I'm going to have to save up. I'm in school too so I also don't have a lot of time to work on it. It's fun when I can though.
Good luck,
JB