This document provides an overview of MOOCs (Massive Open Online Courses). It defines a MOOC as an online course with unlimited participation and open access via the web. The history of MOOCs began with George Siemens' theory of connectivism in the early 2000s. There are two main types of MOOCs - cMOOCs (connectivist MOOCs) which are based on connecting learners through social media, and xMOOCs which are sponsored by universities and focus more on video lectures. The document also lists some fields of interest for potential MOOC topics such as human reproduction, genetics, and environmental studies.