The lecture provides guidance on how to achieve the FAIR principles for research data in a legal sense by using Creative Commons licences and public domain tools. The main topics include the protectability of various types of content and how protected and non- protected content and data can be "opened" in terms of enabling legal reusability. The lecture also explains the different layers of CC licenses, including the human-readable and legalese versions, as well as the technical layer of the licenses. In addition to the presentation there will be a Q&A session.