Enjoy the process!

Truing the rear wheel sounds like your biggest challenge.

What kind of brakes are on it, and where are you?

I know there are many here (including myself) that might be willing to open our parts boxes and see if there is anything in there you can use. I'm pretty sure I have a brake I could send if it would do the job for you.

Don't pay atention for Cycletoine if he asks about the derailleur I am supposed to send him... I really am looking for it, and it just happens to not be with the rest of my derailleurs.

As far as repair and maintenance information, Sheldon Brown's site (sheldonbrown.com) is always a good place to start, as is the Park Tool site. There are also lists of links in a sticky here to help ytou with any Vintage issues.

I don't know the specific bike to help you figure out how much money you should pour into it, but almost any bike is worth the time to repair as long as the parts are available and the frame is not bent or cracked.