The facilitator’s training for peer support workers in mental health course was a recovery‐based initiative addressed to professionalize peer support in Catalonia, Spain. Our aim was to elicit participants’ motivations, significant learnings, and opinions regarding the training programme. A qualitative approach was used through content and thematic analyses of the course contents and participation narratives. The motivations to attend the course were helping others, learning, and supporting the implementation of the peer support profession. Participants learnt concepts on pedagogy, peer support, and recovery. The key resulting themes were organization and moderation; peer support’s role, skills, functions, and values; language; health system knowledge; and types of support. The course programme seems appropriate in preparing people who have lived experience of mental health problems as facilitators of future peer support training courses. The present analysis identifies the participants’ vision regarding their learning needs. It aims to serve as a guide for similar train‐the‐trainers courses.