There's this really excellent series of posts happening over at Go Into the Story right now:
This week we were fortunate to feature a screenwriter’s roundtable I did with a group of talented Hollywood screenwriters: Chris Borrelli, F. Scott Frazier, Chris McCoy, Justin Rhodes, Greg Russo, and John Swetnam. How good are they? Between them, they have sold more than a dozen spec scripts and have multiple original screenplays on the Black List. Here are links to all six installments of the interview
They're chatting about their process, how there's no one right way to write, and much more besides.