This is a reference post providing some links to resources that discuss manuscript formatting with a few notes of my own at the end. I'll update as needed.
If you have any resources of your own, feel free to post a comment below. I'd love to make this a more comprehensive resource.
Here are the links:
And some notes:
- Robert J. Sawyer and Holly Lisle both recommend using 12 point Dark Courier as the manuscript font.