If you’re a writer who’s been using Scrivener, here’s a video on replacing Scrivener with Emacs and Org mode. The author is really a Vim guy so he’s using Evil but that’s really just a detail. His configuration as well as a link to the video is available so you can see how he set things up.
Again, it’s from the perspective of a Vim user but there’s a lot of good information. If you’re already an Emacs user and are using Scrivener or want to start a creative writing project, you should take a look at this video. It’s about 17 and a half minutes so plan accordingly.