Open Educational Resources (OER) are teaching and learning materials that are freely available online for anyone to use. OERs can include full courses, textbooks, videos, and other materials. They provide 5 key permissions: to retain, reuse, revise, remix, and redistribute the content. Using OER can substantially reduce education costs while improving quality and empowering teachers and students. Several initiatives in India promote OER, including the Digital Library of India, National Digital Library, Shodhganga, NPTEL, and resources from NCERT, NIOS, and Agropedia. OER allow for innovative teaching practices and provide students open access to additional educational materials.