Developing online training for health and medical researchers across multiple sites and institutions requires careful consideration to meet the needs of all learners. The Research Education and Training Program (RETP) has attempted to provide a suite of learning modules which are freely accessible to the 21 partner institutions of the Western Australian Health Translation Network (WAHTN). Many lessons have been learnt along the way of this multi-stage process. This paper aims to provide 12 tips in three key areas of online development: writing, online development and maintenance of learning modules. The tips provide a brief summary of these key areas to enable others who may be considering developing and delivering a broad scope of learning modules. This paper is written in the context of modules being delivered for the purpose of continuing professional development and not for high-stakes university courses or similar course requirements.