"Creative Common licenses (CC) are legal tools that creators and other rights holders can use to offer certain usage rights to the public, while reserving other rights. Those who want to make their work available to the public for limited kinds of uses while preserving their copyright may want to consider using CC licenses" (Creative Commons, 2020).
This video made by the University of Guelph Library helps explain some of the main ideas behind Creative Commons.
"What are Creative Commons Licenses?" by University of Guelph Library is licensed under CC BY-SA 4.0