What do you want to know (or wish you had learned earlier) about lighting in Blender?
The next fundamentals course that I'm working on is all about lighting. It'll cover all the technical aspects of how it works in Cycles and Eevee as well as artistic techniques that can help improve any render.
Just to make sure I'm not missing anything, is there anything you feel is missing from most tutorials about lighting, something in particular you'd like to learn about it, or something you wished you had known when you started out? I'd love to hear your thoughts.