Medical specialists' lifelong learning is essential for improving patients' health. This study identifies affordances for learning general practitioners (GPs) engage in, and explores what influences engagement in those affordances. Eleven GPs were interviewed and the interview transcripts were analysed thematically. Stephen Billett's theoretical framework of workplace participatory practices was used as an analytical lens to explore the topic. Challenging patient cases were identified as the main trigger for engagement in learning. Local, national and international colleagues from the same and other specialties, were found to be an important affordance for learning, as was written material such as websites, journals and recommendations. Other inputs for learning were conferences and courses. Workplace aspects that were essential for GPs to engage in learning related to: place and time to talk, relevance to work, opportunity for different roles, organisation of work and workload, and working climate. Importantly, the study identifies a need for a holistic approach to lifelong learning, including spontaneous and structured opportunities for interaction over time with colleagues, establishment of incentives and arenas for exchange linked to peer learning, and acknowledgement of the workplace as an important place for learning and sufficient time with patients. This study contributes with a deepened understanding of how GPs navigate existing affordances for learning both within and outside their workplaces.