Road Bike Anatomy

Im wondering if anyone knows of a site or a book (preferably a website, because its free) that could break down the different parts of the road bike, hub, cassette, derailleurs, stems, etc. I think my LBS is getting tired of asking me questions but id like to know exactly what people are talking about when they say their bottom bracket needs repair, and i figure this would be the first step toward DIY remedies. Thanks.

 

Check out this website: http://www.parktool.com/repair/Or: http://sheldonbrown.com/glossary.html