This document discusses the benefits of open educational resources (OER) as an alternative to expensive textbooks. It notes that the high cost of textbooks has led many students to not purchase required books or take fewer courses. OER provide free and flexible resources that can be retained, reused, revised, remixed and redistributed. Studies show that the use of OER has significantly reduced costs for students while expanding access to education. OER have also improved educational outcomes in some cases. The document encourages students to advocate for OER by talking to professors, building campus partnerships, organizing, and remembering that making education more affordable and accessible benefits all students.