Creative Commons website - includes: a complete explanation of the six Creative Commons licenses; access to a database of content with CC licenses; a tool for selecting the appropriate CC license and registering it; information about the proper attribution of CC licensed content; examples of licensed work; and other advice related to the sharing and use of CC licensed work.
Creative Commons Youtube Channel - Several videos explaining the benefits of sharing research and culture openly.
How to attribute Creative Commons photos - according to the host of this page, Foter.com, 99% of CC photos are either not attributed properly or not attributed at all.
Finding Public Domain and Creative Commons Media - locating open access photos, video, and audio for projects and presentations. Authored by Meg Kribble at the Harvard Law School Library.