There is a need to promote the creation, revision, publishing and adoption of OER across the world. One way to do this is to make available more digital tools for people to use, create, revise and publish OER. This toolkit aims to promote the creation, repurposing and publishing of OER using free and open-source software (FOSS). // The toolkit has been developed by IT for Change, an organisation working with teachers and school systems to support the use of FOSS for OER creation. The development of this course material was supported by the Commonwealth of Learning, Burnaby, Canada as part of Grant #2015-2585, generously made by The William and Flora Hewlett Foundation, USA. // The toolkit has been designed to allow each section to be used independently and as a whole.