This document discusses Open Educational Resources (OER), which are freely and publicly available teaching, learning and research materials that can be reused and modified. It notes key concepts around OER like open licensing and accessibility. It outlines purposes of OER such as enhancing access, promoting equity and collaboration. Benefits are highlighted like affordability, customization and pedagogical innovation. Examples of OER platforms and projects are provided. Challenges to OER adoption are described as well as potential impacts like increased access to education and cost savings for students.