A study researching more than 48 biodiversity citizen science projects in Europe and Australia suggested that participating in training throughout the project was positively associated with participants’ perceived gains in knowledge and skills. Other important elements were the information they received from the project, the interaction they had with other participants, project staff, and scientists, and the feedback and recognition they received from the project. The eu-citizen.science Training Platform offers a variety of Massive Open Online Courses (MOOCs) and training material. 66 Visit the project website