The Rethink Learning Design project began in 2018 when a group of learning designers, educational technologists and developers met to discuss their experiences supporting learning design in the context of open education. The editors wanted to build a resource about learning design that challenged assumptions about the utility of a textbook as a tool for learning and gave more substance to the idea of openness, not only as a resource but also as a practice. As a result, these original designers imagined a resource to support learning design that could itself be iterative, contributory, and shaped by readers’ experiences, feedback, and ideas. Several members of CTLI were invited to contribute to the book, which is now available for everyone to read, comment on, and use. If you want to know more about instructional design and open learning, this is an interesting place to start. If you are looking for ideas about how to make your content more interactive in an online environment, this resource might provide some inspiration.