Use your preferred variation of plaintext - markdown, reStructuredText, etc. - in as plain an editor as you can come up with. (There are plenty of minimalist/distraction free plaintext editors out there if you'd rather not use your favorite code editor.)
The hardest part in long form copy is getting the content written. Anything visual on top is just distraction that will get in your way and slow you down.
Once you've the copy, use Pandoc or equivalent, and then typeset and format using a more sophisticated medium as needed.
The hardest part in long form copy is getting the content written. Anything visual on top is just distraction that will get in your way and slow you down.
Once you've the copy, use Pandoc or equivalent, and then typeset and format using a more sophisticated medium as needed.