Hi @vonabell, there's a markdown tutorial here: https://www.markdowntutorial.com/. Most README documents for development projects are written in it because it is easy to it read both formatted and in plain text. WYSIWYG means What You See Is What You Get. Typically, the content editor in Wordpress is WYSIWYG. The problem with WYSIWYG editors is that they don't always behave as you would expect.
Btw, you should bookmark https://steemd.com/@vonabell if you haven't yet. Good way to keep tabs on the meta attached to your account (voting percent, likes, comments etc.).
Thank you so much for that information. I especially appreciate the book mark suggestion. That is cool. Didn't even know it existed and it makes me dizzy. The more I learn the more I thing this whole Steemit could be a full time job and I have one of those!! So far I dont like that I cant just get right to a comment in replies, it brings me to the post but I have to dig for it on the post. Is there a better way I dont know about ? Thanks for the info!