It covers everything from writing to selling your script. I never leave home without it. If you're happy with your script, you're ready for the following books. Magazines Most filmmaking magazines contain information for the writer as well as the filmmaker. It offers how-tos and commentary from those in the field.
Subjects covered include digital video editing or investing.
The more you know the better. It is also beneficial to read published scripts and screenplays. If you are still writing, one resource that is just as important as The Screenwriter's Bible is a program called Final Draft. It's a film class in your very own computer. Of course, you'll need one of these.