Bike Forums, Sheldon Brown (although that's actually, ya know, valuable info) and bike blogs like BikeSnobNYC (don't really like this myself) and Fat Cyclist. Just...google bike stuff like that, and you'll learn a lot. And if you have friends that bike or a shop nearby, you can start going there/hanging out.

edit: just pretend that doesn't sound like one huge shill for those sites. It's just what I read and how i've learned a little bit about biking via the internet.