Climate Compatible Growth (CCG), together with a variety of international partners and universities, has created free, open-source courses hosted online by the Open University and in collaboration with the OpTIMUS community. Each module is composed of detailed lecture slides or webpages explaining the theory behind the tools, hands-on exercises for learning how to use the tools, an assessment through quizzes, and a certificate on completion. The Climate Compatible Growth OpenLearn Collection provides all the necessary materials for anyone to learn how to use the various tools and build capacity in partner countries to address the fundamentals of planning for climate compatible growth.