While most people don't care about proper structuring of their articles (or even documentations) Markdown makes it super easy to do so. Even the Ghost Android app (the content-management-system this blog runs on) supports markdown and proper preview of an article.
Check out this markdown page for a quick introduction into markdown.
The syntax of markdown is fairly easy, just look above on the official page or the cheat sheet. The goal of markdown is to give you an easy way of writing text, but also make it readable as itself.
So, what now?
Use markdown in your personal projects for documentation e.g.
README.md with better structure than a plain text file. You can also generate static pages with markdown (I might write another article about that).
Hope you like it x Fred