Does it matter if not everyone watches right until the end and completes the final coursework? I want to know as much as I can about different subjects but I w

Does it matter if not everyone watches right until the end and completes the final coursework? I want to know as much as I can about different subjects but I want to immerse myself in them to different levels. Sometimes I am happy just to stick a few videos on in the background while I do something else, so I get the gist of what something is about and know what to focus on later if I need more information. I don't necessarily care if I could pass an exam or not.