An essential skill today is knowing how to cite sources properly. Creative Commons has a system of licenses and tools for creators to retain copyright while allowing others to:

Copy, distribute, and remix

Explanation:

Creative Commons is not for profit international network and organisation with head quarters in America that enables the discovery of material that are openly licensed so as to be available for use by others fostering the possibility to gain educational insight to creative works to serve as foundation for their own works legally. Creative Commons provide CC licences that are accessed by content creators with a desire to share their creativity on the web.