Open Educational Resources (OER) provide free and open access to educational materials for students and instructors. Some key advantages of OER include giving worldwide access to learning, low distribution costs for courses and materials, and the ability to quickly update content. However, disadvantages include potential issues with the quality and accuracy of content since it can be posted by any user. Additionally, language barriers and technological issues may limit access for some students. Maintaining and updating OER also requires time from instructors and creators who are not compensated for their work.