This guide offers an overview of OER, open licensing, and will help you to locate and evaluate open resources to use in your courses or as supplementary material.
The California Open Education Resources Council facilitates the peer review of open textbooks which are showcased in the California Open Source Digital Library (COOL4Ed).
MIT OpenCourseWare is a publication of virtually all MIT course content. Most courses contain syllabi, course readings and/or reading lists, assignments, and exams.
Open Learn is an initiative of The Open University, UK and offers more than 1000 free online classes. It also provides supplemental materials for educators, including articles, podcasts, videos, games, and much more.
Open Yale Courses provides free and open access to a selection of introductory courses taught by distinguished teachers and scholars at Yale University.
The University of California - Irvine has a large collection of openly licensed courses available for the public to use, licensed under Creative Commons licenses.
Be sure to read the licensing information to determine any use restrictions.