Encyclopedias, dictionaries, and other resources to help you discover basic information—names, dates, definitions, summaries, etc. These are good places to start when narrowing or choosing your topic, and when beginning research on an unfamiliar subject.
MathVids.com - free instructional math videos.
Calculus Animations - Kelly Liakos
Mathematical Association of America Distinguished Lecture Series - transcripts/notes and interviews for past lectures in series that discusses, for a general audience, current trends in mathematics .