This document discusses e-learning and open educational resources (OER). It begins by providing context on the origins of OER through the MIT OpenCourseWare project in 2001. It then discusses how OER are part of the open access movement and have been adopted by many institutions. The document examines definitions of OER and questions concepts like what makes resources open and educational. It also outlines some of the major OER repositories and barriers to producing and using OER. Finally, it provides examples of how OER are used in online courses and MOOCs.