"Creative Commons provides a range of licenses, each of which grants different rights to use the materials licensed under them.
All of these licenses offer more permissions than “all rights reserved.” - from the Creative Commons website
OER resources are governed by Creative Commons copyright licenses. Creative Commons is a copyright regime that provides licenses that offer clear rights to use, and reuse, while requiring public acknowledgement of one's contributions to a work. Because of this OER works usually are released under a Creative Commons Copyright license. When an OER work is released under a Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0) license users of the content can COPY and REDISTRIBUTE the content in any medium and ADAPT the content by remixing, changing and building upon the original content.
See the full details of the CC BY-SA 2.0 license on the Creative Commons website.
When it comes time to select the appropriate CC license level you want to accomplish your goals, use this niffty click through tool on the Creative Commons website to guide you to the optimal choice.
BCC Librarians are available for consultation to help you with CC license questions.