From January 12-17, 2020, 29 doctoral students, postdocs and practitioners from seven different countries participated in the Citizen Science Winter School. The Winter School was organized by the Participatory Science Academy and the Graduate Campus of the UZH. The participants completed a packed program of lectures, workshops and excursions. The trainers gave the participants deep insights into different perspectives on Citizen Science and discussed concrete tools for project design. Part of the program was also the workshop "Supporting Citizen Science in Academia and Beyond" (PDF, 2 MB), where participants had the opportunity to discuss in a broader framework and with various experts.