To fulfill the role of supporting Research Data Management (RDM) librarians need to build an understanding of the policy context in which managing data has become important and gain a good grasp of researchers’ activities, motives, perceptions and feelings around their research and their data. This online course explains the need for research data services, how to find out about users and their needs and then how to apply this knowledge to create a portfolio of research data services that they will want to use.