This non-profit organization has provided an easy way for you to share your creative work without relinquishing any of your copyrights. Use a Creative Commons license to allow others to reproduce your copyrighted work and stipulate conditions that must be met. For example, you may require attribution and no commercial use.
If you are using text, images, or other content that has a Creative Commons license, you can clearly see what you are legally allowed to do with the content--it's much more permissive & flexible than traditional "all rights reserved" copyright alone.
Attribution
CC BY
Attribution-NoDerivs
CC BY-ND
Attribution-NonCommercial-ShareAlike
CC BY-NC-SA
Attribution-ShareAlike
CC BY-SA
Attribution-NonCommercial
CC BY-NC
Attribution-NonCommercial-NoDerivs
CC BY-NC-ND