Some resources I use:
Yale University Library Liblicense, Licensing Digital Information, provides descriptions of licensing terms, sample licenses, license vocabulary, various links to other resources, and an opportunity to join the Internet discussion list, LIBLICENSE-L, on electronic content licensing for academic and research libraries. See http://www.library.yale.edu/~llicense/.
The University of Texas has a variety of information on copyright and intellectual property. See. http://www.utsystem.edu/ogc/intellectualproperty/index.htm.
Stanford University Libraries – Copyright and Fair Use – has extensive information on copyright including information on copyright, fair use and permissions. See http://fairuse.stanford.edu/
The EBLIDA (European Bureau of Library, Information and Documentation Associations) site is more focused on Europe, and has information and links on licensing in general, including consortia. See http://www.eblida.org.
The Copyright Advisory Office of Columbia University Libraries/Information Services has various resources on fair use and permissions. See http://www.copyright.columbia.edu/.
The International Federation of Library Associations and Institutions (IFLA) has various documents on license agreements. See http://www.ifla.org.
The California Digital Library (CDL) has general licensing information, and a standard license agreement and explanation of clauses in the agreement, for use between a publisher and the CDL. See http://www.cdlib.org/vendors/coll_dev_contact_info.html.
Please share any licensing resources you use by commenting on this post.