American Association of Universities Campus Guide to Copyright: https://www.aau.edu/issues/copyright
A Citizen's Legal Guide to American Copyright Law from Case Western School of Law: http://www.newmediarights.org/guide/legal/copyright/citizens_legal_guide_american_copyright_law
Copyright for Librarians from the Berkman Center: http://cyber.law.harvard.edu/publications/2013/copyright_for_librarians
Taking the Mystery Out of Copyright from the Library of Congress: http://www.loc.gov/teachers/copyrightmystery/#
Columbia Copyright Advisory Office, Columbia University Libraries, available online at http://copyright.columbia.edu/copyright/. Site includes permissions forms, publication agreements, and fair use checklists.
Copyright & Fair Use, Stanford University Libraries, available online at http://fairuse.stanford.edu/
Copyright Information Center, Cornell University, available online at https://copyright.cornell.edu/
Copyright Initiatives, University of Minnesota, available online at http://www.lib.umn.edu/copyright/.
Copyright Watch - Monitors Legal Developments on Copyright around the World: http://www.copyright-watch.org/home
Copyrights and Wrongs, American Association of University Professors website authored by Ann Springer, available online at https://www.aaup.org/issues/copyright-distance-education-intellectual-property/copyrights-and-wrongs
Crash Course in Copyright, authored by Georgia Harper, University of Texas, available online at http://copyright.lib.utexas.edu/dmcaisp.html#link. Site provides many sources of helpful information on all types of copyright issues. Good for the first time user or as a refresher for those who know some copyright basics.
Digital History Guide - covers issues involving gathering historical materials to put on the Internet including copyright issues: http://chnm.gmu.edu/digitalhistory/
Frequently Asked Questions (FAQ) from University of San Francisco Internet and Intellectual Property Law Clinic: http://chillingeffects.org/copyright/faq.cgi#QID867
Guide to the TEACH Act, University System of Georgia , available online at http://www.usg.edu/legal/teach_act/
Know your Copy Rights. Association of Research Libraries, online brochure for faculty and teaching assistants, available at https://www.knowyourcopyrights.org/storage/documents/kycrbrochure.pdf
Music Law Updates: http://www.musiclawupdates.com/
Scholarly Communications @ Duke, Kevin Smith, Scholarly Communications Librarian at Duke University, available online at https://scholarworks.duke.edu/copyright-advice/scholarly-communications-toolkit/ . Site includes release forms and a TEACH Act flow chart.
The Scholarly Kitchen - a blog devoted to scholarly publishing: http://scholarlykitchen.sspnet.org/
SHERPA/RoMEO Publisher copyright policies & self‐archiving, available online at http://www.sherpa.ac.uk/romeo/. SHERPA is a collaboration of higher education institutions, primarily in Great Britain. Use this site to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement.
Teaching Copyright, Electronic Frontier Foundation, available online at http://www.teachingcopyright.org/. Site provides curriculum and numerous resources.
Copyleft is a play on the word Copyright to describe the practice of using copyright law to offer the right to distribute copies and modified versions of a work and requiring that the same rights be preserved in modified versions of the work. In other words, copyleft is a general method for making a work (text, music, computer programs, Images, etc....) free and requiring all modified and extended versions of the program to be free as well.
Copyleft is a form of licensing and can be used to maintain copyright conditions for works such as computer software,documents, music and much more. In general, copyright law is used by an author to prohibit others from reproducing, adapting, or distributing copies of the author's work. In contrast, an author may give every person who receives a copy of a work permission to reproduce, adapt or distribute it and require that any resulting copies or adaptations are also bound by the same licensing agreement.
[From Wikipedia]The websites listed here are starting places for your search of Copyleft materials on the web. Other websites may also be helpful, just be sure you know how the original creator intended for their work to be used.