Well-trained practitioners are invaluable in any effort to prevent and counter radicalisation. The subject of training was therefore high on the agenda at several Radicalisation Awareness Network (RAN) meetings in 2017. These culminated in the Thematic event ‘Training practitioners to prevent and counter violent extremism’ in Brussels on 16 November. This practical handbook on countering/preventing violent extremism (CVE/PVE) training programmes draws on the knowledge and expertise shared at these various events, as well as within the RAN network at large. Published by RAN, the handbook provides guidance and practical advice for trainers and policy-makers.