The vast majority of Open Access and Open Educational Resources have what is called a Creative Commons Licenses. These licenses allow creators to designate how their work may be used by others, with the point being to support equitable research and educational resources for all. Creative Commons Licenses are built on the following 5 principles.
As a content creator you decide which license to use, add it to your work, and then publish it to your website, your institutional website, a repository, or OA/OER resource site. Once done is is available for reuse around the world within the parameters set by you.
For more information about the Creative Commons please visit our guide Copyright, Fair Use, and More. And feel free to contact cgruwell@uwf.edu for questions and assistance.
Image from Making Open Educational Resources: A Guide for Students by Students by Ashlyne O'Neil, et. al. a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. 
You may choose to openly share your work with others by retaining your copyright and assigning your work a Creative Commons License. This license does not replace copyright, rather it enhances how you as an author allow people to use your work. Most importantly...if and when you use a CC resources you are required to give attribution (See resource links below).
"Creative Commons provides free, easy-to-use legal tools that give everyone from individual “user-generated content” creators to major companies and institutions a simple, standardized way to pre-clear usage rights to creative work they own the copyright to. CC licenses let people easily change their copyright terms from the default of “all rights reserved” to “some rights reserved.” -- What is Creative Commons
Creative Commons Licenses explained at a glance.
For more information check out the Creative Commons Handout Below
General Information