This document provides an overview of MOOCs, including what they are, their history, characteristics, and types. A MOOC is a massive open online course that is free and has unlimited participation. They first emerged in 2008 and aim to provide educational opportunities to millions of students. MOOCs have online content like videos and readings and have no limits on attendance. The main types are connectivist MOOCs and eXtension MOOCs. The author expresses interest in creating a life sciences MOOC and pursuing topics like genetics, evolution, and environmental studies in future MOOCs.