This <i>Pressbooks Guide</i> builds on information provided in the <i>Pressbooks User Guide</i> published by Pressbooks.com. It follows the steps an author might take to create or modify an open educational resource (OER) in Pressbooks. Each chapter points readers to the pertinent chapters in the <i>Pressbooks User Guide</i>, provides any additional information, and includes instructions specific to post-secondary faculty and staff working in British Columbia and the Yukon.