Perhaps it sounds ridiculous but the best thing that young filmmakers should do is to get hold of a camera and some film and make a movie of any kind at all.
It sounds like a cliche but it... you do sing about what you know about. And I grew up in a small town and I grew up in a place where your whole world revolved around friends family school and church and sports.
Football taught me how hard you had to work to achieve something.
I don't pay much attention to sports.