Markdown is very easy, you have the markdown styling guide anywhere you are typing a comment or posting I believe, there are some tricks with HTML like pulling images or text left or right, some other minor tricks, but other than that Markdown it is it's quite easy, you can link using [text](https://..)you can directly drop images nowadays :) here is another more advanced way to use links [![img name or alternative text](img link)](linking page)

best of luck with the Markdown learning :) msg if you need help or have questions about steemit :)