Online Film school?
Filmmaking isn't rocket science with formulas. There are no "rules". Make a short film, see what doesn't look good to you and make another one.
You can't learn making movies by reading books or watching tutorials. That's just a mental masturbation that gives u an illusion that you re learning how to make movies, when in reality u ain't making a jack-shit.
Buy some pizza for your friends, make 5 minute film, edit it, and repeat