But, don’t be shy about talking to your advisor or colleagues. Convincing your colleagues or friends to join you in the course can help you persist and complete the course. And, no decent professor will scorn a student working to improve their knowledge. If you can muster the courage to articulate this gap in your knowledge to your supervisor, telling them will help you commit to completing the course. Your supervisor can also be a great support in choosing a course that will be most relevant to your work. For example, I was only able to find a useful MOOC to learn about how fluids like blood work when my supervisor told me to search for “Transport Phenomena”.