This document provides an overview of Massive Open Online Courses (MOOCs). It discusses the history and origins of MOOCs, tracing them back to 2004. It outlines two main types of MOOCs - cMOOCs which emphasize openness, connections, and collaboration, and xMOOCs which have a more formal structure. The document also examines the pros and cons of MOOCs, noting that they provide free or low-cost access to courses but can lack real-world engagement. It concludes by stating that the presenter is interested in life sciences MOOCs that allow sharing ideas between peers and experts.