Open Learning free online classes

Open Learning has a variety of free online classes geared toward adult learners. Courses cover topics such as climate justice, adult care, and cell signaling. The classes require anywhere from 1-100 hours. Website: https://www.open.edu/openlearn/

Open Yale Courses

Open Yale Courses offers free not-for-credit courses taught by Yale professors. All lectures are available in video, audio, and text formats, making them highly accessible. Website: https://oyc.yale.edu

MIT open source course content

The MIT OpenCourseware from the Massachusetts Institute of Technology is an online collection of nearly all MIT course content, including video lectures, online textbooks, and the MIT open learning library. Website: https://ocw.mit.edu

Directory of Open Access Books

The Directory of Open Access Books is an extensive collection of peer reviewed books available for free online. Subjects range from education to physics to ethnology. Website: https://www.doabooks.org/doab?uiLanguage=en