This little gem from Brett Terpstra illustrates just one of the ways text expansion can be used. One of my as yet unstated goals with this blog is to hopefully lower the barrier for entry to some of the wonderful, simple automation tools available on the Mac. For anyone dipping their toes in the automation water for the first time, I will often suggest text-expansion as an ideal place to start. There are numerous utilities available for this, from apps like QuickKey, TypeIt4Me and Typinator to what is considered the gold standard in TextExpander.
Nicholas Cifuentes-Goodbody has a series of Youtube videos on academic writing in plain text. This one covers Markdown, but he also looks at Latex, Pandox and Marked 2, among other things. This is an excellent introduction, especially if you are the kind of person who benefits from a visual guide. It includes a primer, but if you don't need the basics, you can skip to the demonstration that starts aroud 5:00
The entire channel is worth checking out.