This document discusses adopting open textbooks for college courses. It begins with an overview of open textbooks and their benefits, such as being freely available. It then discusses the history of open educational resources and provides examples of where open textbooks are used. Reasons for adopting open textbooks given by faculty and students include lowering costs and improving access and updating. Survey results from BC show increasing adoption of open textbooks at public post-secondary institutions there, with estimated savings of hundreds of thousands of dollars. The document concludes by discussing options for faculty considering adopting open textbooks, from full adoption to partial use, and resources for finding open textbooks.