Copyright and Fair Use
http://fairuse.stanford.edu/

Copyright and Intellectual Property
http://www.ala.org/washoff/property.html
From the ALA Washington Office.

Fair Use Guidelines for Educational Multimedia
http://www.indiana.edu/~mediares/mmfairuse.htm

A Visit to Copyright Bay
http://www.stfrancis.edu/cid/coprbay/coprbay.htm
Thorny, legal issues are presented in a fun tutorial.

The United States Copyright Law
http://www4.law.cornell.edu/uscode/17/
The definitive legal site.