This document discusses free and open educational resources (OERs) in online learning. It defines OERs, open courseware, and open textbooks, and notes that they are free online resources that can be used, reused, and adapted with attribution. The document outlines where to find these resources, such as in aggregation sites and repositories. It discusses the benefits of OERs, including cost savings, abundance and diversity of content, and flexibility of use. However, it also notes issues with finding, aggregating, and distributing these resources consistently.