There are many fantastic web resources and blogs on typography. Here is a sample:
Dedicated to typography and its history. Learn about the anatomy, classification categories, a short listing of hotmetal (type that works in multimedia), and an interactive timeline that takes you from 15,000 BC to the present. This timeline highlights some of the important events in mark making that have changed the way we communicate with each other--cross-referenced with world events to guide you as you travel through time. A glossary is also provided.