These guides have been prepared by UNESCO, as part of its programme of the support to governments and educational institutions in the implementation of the UNESCO OER Recommendation. They draw heavily on the in-depth background papers prepared by OER experts from around the world in each of the five Action Areas: Prof. Melinda dP. Bandalaria (building the capacity of stakeholders to create, access, re-use, adapt and redistribute OER); Dr Javiera Atenas (developing supportive policy); Dr Ahmed Tlili (encouraging inclusive and equitable quality OER); Dr Tel Amiel (nurturing the creation of sustainability models for OER), and Ms Lisbeth Levey (facilitating international cooperation). We are deeply grateful for their assistance and expert knowledge. Preparation of the text of the final guides was done with support from Neil Butcher and Alison Zimmermann of OER Africa.