Presentation on the CESSDA Data Management Expert Guide presented during the Open Science and Research Data Management Train-the-Trainer Bootcamp, organized by FOSTER, CESSDA, ELIXIR and DANS on 17 April 2019 in the Hague, The Netherlands. The bootcamp was for people supporting researchers in Open Science and Research Data Management (RDM) and looking for ways to make their training more effective. The event gave an overview of different European Open Science and RDM training and learning resources.