Aimed at anyone interested in using training materials about persistent identifiers, either for their own development, or for training others, this session provided an overview of the training materials created within the FREYA project. Describing resources such as the Knowledge Hub and the Guides to Choosing Persistent Identifiers it will outline how these resources can be used, and the challenges and opportunities of creating these materials, especially around currency and sustainability. Introduction: Overview of PID Training Materials, René van Horik (DANS) Introduction to FREYA Knowledge Hub, Frances Madden (British Library) Introduction to the Guides to Choosing Persistent Identifiers, René van Horik (DANS) Training events and event materials, Frances Madden (British Library) Response from Erzsébet Tóth Czifra (Centre Marc Bloch, DARIAH-EU