I've started writing all my screenplays using the new free software MovieScripter. It's similar to Fade In Pro but runs in the browser: https://moviescripter.org
Love it or hate it, there's a lot of good ideas in this book. At least he doesn't waffle on about the hegelian dialectic. RIP Blake Snyder.
OK, not actually me but I like the idea.
My favourite book on script formatting.