Open Educational Resources (OER) is a great site to bookmark.

Quill West developed this page:

Emily Wood, a librarian at Pierce College, put together a helpful page:

Another great source:  Directory of Open Access Journals (peer-reviewed journal articles – no subscription fees or costs).

Pictures you can legally use:

Library of Congress Photo Galleries

NIH Photo Galleries

Creative Commons is a great source for pictures, music, video, and text people have created for sharing:

Licenses and Attributions