I’ve composed a Markdown Guide for this website:
I needed something with a broad overview of the Markdown syntax while providing easy and ready to use examples for my teaching courses. Therefore it lacks extensive syntax descriptions and just shows practical examples that are directly applicable to Markdown documents, Jupyter notebooks or even Jekyll websites. It’s a conglomerate of the sources listed therein and stuff I’ve accumulated during my Markdown experience. I will expand it from time to time whenever I come across to something new and useful.