Use what the professionals use to write books, scripts and much more.... Scrivener! It's a great tool to set up any writing project. I use it and love it. It's a bit tricky at first so I'm recommending you get this course.
Follow this link to get
and then get this course to quickly learn how to use it in just a few days!
The LEARN SCRIVENER FAST COURSE!
It's put together great, the teacher is easy to understand and you get all kinds of bonuses with it. Who knows, maybe you'll be writing the next Doctor Who story!