This document discusses open educational resources (OER) including pros and cons. It defines OER as courses, materials, and techniques that can be freely used and adapted. Benefits include reducing costs, allowing customization for student interests, and sharing knowledge worldwide. However, some challenges are that instructors may not be familiar with new formats and adapting content across languages and technologies can be difficult. The document also outlines different creative commons licenses and their usage permissions as well as issues like maintaining quality and providing proper attribution when content is shared and revised.