Open Educational Resources (OER) offer benefits such as lower costs, portability, flexibility, control for instructors, and environmental sustainability, but they also face challenges like uncertain availability, lack of selection for certain topics, outdated materials, competition from traditional publishers, and perceptions of lower quality. The advantages can significantly improve accessibility for students, while the drawbacks may limit their effectiveness in professional or technical education. Therefore, while OER presents a promising alternative to conventional textbooks, it requires careful consideration of its limitations.