In the framework of the SSH CENTRE Project WP3, led by K&I, an online course on Knowledge Brokerage was held from 20 to 24 November 2023 for 30 PhD and Early to Mid-Career Researchers working in Social Sciences and Humanities (SSH). The course was focused on knowledge brokerage of SSH knowledge for sustainability transitions and was intended to help participants define and design the six KB initiatives they will conduct in collaboration with as many European cities. The course comprised five four-hour sessions, each focusing on a specific topic. Some invited speakers contributed to the course including Wiebe E. Bijker (University of Maastricht), Esther Turnhout (University of Twente) and Claire Roumet (Energy Cities).