Non-nerds just rarely know about it (I see no reason to avoid using it otherwise). I've advised a non-tech gurl to use Typora instead of Word for her study notes and she's been using it ever since very happily. Sadly you can't even download Typora without the browser warning that's weird ("unusual for people to download") and you probably shouldn't. I use and recommend Typora (of all the other Markdown-aware editors) because besides having all the handy features it also is visually beautiful - this is a good inspiration and concentration buff.