Real world evidence for post market surveillance - medical device and drugs

I am interested in learning more about real world evidence . There is a lot of buzz around it especially for post market studies. I feel like I don't know this well enough. It seems like a niche field but it seems inaccessible. I want to sit down for one day to focus on the literature out there. Are there any recommended courses I can take to become more well versed in RWE? Are there any recommended experts I can contact?