Catholic University of America, Office of General Council's site which gives extensive information and explanation of the law and current legislation. The Q&A section provides real world examples of applying laws and guidelines.
The Technology, Education, and Copyright Harmonization Act (TEACH Act), passed in 2002, was intended to update copyright law (specifically, Section 110(2)) pertaining to transmissions of performances and displays of copyrighted materials.
Concise, yet packed with info. Overview and examples of Copyright, Fair Use, and Educational Multimedia. Nice list of permissible amounts of information, for example, how many lines of a poem, amount of a film, etc.
Answers to FAQs on Photographer's copyright by Carolyn E. Wright of the Law Office of Carolyn E. Wright, LLC. She is a full-time attorney whose practice is aimed squarely at the needs of photographers.