University of Illinois at Urbana-Champlain Writer's Workshop
NC State's Online Writing Lab
Dakota State University's Online Writing Lab
Purdue University's Online Writing Lab
Strunk and White's Online
A great study skills website in different languages that covers just about everything!
From Chemeketa Community College. Click on "Resources" to find study guides for different subjects such as accounting, economics, and foreign languages.
Some good common sense advice from an instructor at Cuyahoga Community College.
Handouts from the Student Academic Resource Center at the University of Central Florida. Includes study skills inventories that you can take online.