Repositories
Start your OER search with an online repository. Because repositories collect and compile a variety of resources on specific topics, they tend to be a one-stop shop. When using repositories, be sure to use the advanced search features to specify that you want open resources, to help you find specific resources.
Search Engines
If repositories don’t provide the materials you need, you can also try using a general search engine with advanced filters. For example, a Google Advanced Search offers options for searching materials with certain usage rights. With these filters, you can tailor your results, for example, to show only materials that are free to use, share, or modify
Library Collections
Although the materials in the LLC may not technically be OERs (insofar as the library is paying someone for access to them), library collections are typically free for faculty members and students to access because the library has already purchased access to this digital content. Libraries give you access to databases, journals, and catalogues that you can use to build your course without additional costs to students. You may not be able to upload the material to your course directly, but you can always provide links that students can access, provided that they're familiar with how to gain access to library materials remotely.
Need Help? No problem! Contact your Library Liaisons for additional help.
Great places to start your search include OASIS, and the Mason OER Metafinder repositories. You can also search Open Massachusetts, the state's repository.