Start with an integrated search. These search tools have been developed as OER has gained more popularity and attempt to make the search for OER content simpler and easier. If you don't find what you're looking for, see the tabs to search for specific content items, including textbooks, images, etc.
You can also use Google Advanced Search This link opens in a new window to limit your results to resources that are openly licensed under a creative commons license. Scroll down to see the choices for "Usage Rights."
Screenshot Image from https://fredonia.libguides.com/oer This link opens in a new window is licensed under CC-BY-NC This link opens in a new window.