OpenCulture - courses

http://www.openculture.com/freeonlinecourses

SparkNotes

http://www.sparknotes.com/sparknotes/

Articles and study help about everything. Best known for their literature notes, but their other stuff is pretty great. Can get distracted by the non-academic related articles but you should be fine if you stay in the academic pat of the site.

Features:
College resources:
- College reviews
- College video tours
- General college articles
Articles:
- 25+ subjects, in depth coverage
- Famous SparkNotes Lit. guides
- Famous "No Fear" Lit. series including Shakespere and other classics

Biography.com

http://www.biography.com/people/groups

Biographies of a crap ton of people.