There are several benefits to using Open Educational Resources (OER) according to the document. OER allows students to save money on textbooks and materials. It gives instructors flexibility to create their own course materials or modify existing open resources. OER also makes education accessible to anyone in the world for free or at low cost. However, the document also notes some challenges to OER including a lack of research on its effectiveness, inability to withdraw materials once published, potential lack of funding, and lack of awareness among instructors and the public.