http://www.cas.usf.edu/english/walker/papers/copyright/ipdummie.html
This hypertext article is, unlike many copyright articles, very readable and Web savvy. It's a good place to start for understanding copyright and the Web.
United States Copyright Office
http://lcweb.loc.gov/copyright/
The Copyright Office is a division of the Library of Congress and is responsible for coordinating and regulating all matters relating to copyright in the United States. Everything you always wanted to know about copyright...and more!
Plagiarism
Anti-Plagiarism Strategies for Research Papers
http://www.virtualsalt.com/antiplag.htm
A site written for teachers by Robert Harris, author of The Plagiarism Handbook. Harris discusses ways for teachers to educate themselves and their students about plagiarism and citation. He also presents strategies for preventing and detecting plagiarism.
Avoiding Plagiarism
http://www.hamilton.edu/academics/resource/wc/AvoidingPlagiarism.html
Tips for students (and other writers), assembled by Sharon Williams of Hamilton College. Includes examples of both plagiarism and acceptable paraphrasing.
Cut-and-Paste Plagiarism: Preventing, Detecting and Tracking Online Plagiarism
http://alexia.lis.uiuc.edu/~janicke/plagiary.htm
Prepared by Lisa Hinchliffe, Library Instruction Coordinator at Illinois State University, this site advises teachers about how to define, prevent, and uncover plagiarism. Note that although the content is current, some of the links are not active.
Plagiarism
http://www.nwu.edu/uacc/plagiar.html
This site, which was created under the aegis of the Undergraduate Academic Conduct Committee of Northwestern University, offers many detailed examples of appropriate citation and plagiarism.
Plagiarism and Anti-Plagiarism
http://newark.rutgers.edu/~ehrlich/plagiarism598.html
A thought-provoking discussion of the problem and ways that teachers and administrators can address it. Also includes various methods of detecting electronic plagiarism. This site was created by Heyward Ehrlich of Rutgers University.
Plagiarism: What It is and How to Recognize and Avoid It
http://www.indiana.edu/~wts/wts/plagiarism.html
Created by the Writing Tutorial Services of Indiana University, this site can help students avoid inadvertently plagiarizing while taking notes on sources.