Have you ever wondered how your favorite typeface was created? What's the social history behind Futura or Spectrum? I recently stumbled upon a great site called new.myfonts.com, a giant aggregator of fonts for web and print. You can search a vast database of type and read detailed entries on its evolution and even its cultural association. The site acts as a general library, with the option to purchase the fonts for your personal use.
One of the coolest features of the site is called WhatTheFont! where you can upload a file of a mysterious font and they'll give you their best match in their catalogue. If that doesn't work, you can submit the unknown font to the forum and have other type geeks debate its origins.