Originally posted by D*Alex
buy a book on bike repair
I second this. For some recommendations check this thread
bicycle repair manuals/guides/books .
Sounds like you really need to get hooked up with a good bike shop, too. Are there any near where you are? If there's more than one, visit them all... see how you're treated and maybe have them do some trivial work for you. Once you've found a place you like working with, you can trust them for bigger jobs.