Watch Sarah Morehouse, librarian at SUNY Empire, demonstrate how to use the Creative Commons License Chooser tool to select a Creative Commons license that meets your needs, and apply it to your work. Creative Commons License Chooser Demo (4:54).
Whenever you use a Creative Commons work like an OER, you must attribute it. If you don't, you're breaking the terms of the license and therefore probably infringing on the copyright. There is a specific way to attribute - don't worry, it's not hard!
Additionally, whenever you change or make a derivative work from a Creative Commons work, you must indicate that!
For example, if you only change it slightly, you just add a / and say what you did. For example:
"Thoughts on Birds" by A. Cat, used under CC BY 4.0 / Condensed to remove 4 pages of meowing
But if you change it enough that you're creating a derivative work, it looks much different:
This work, "How cats think of birds", is a derivative of "Thoughts on Birds" by A. Cat, used under CC BY 4.0. "How cats think of birds" is licensed under CC BY 4.0 by Sarah Morehouse.