You can make text italics or make text bold by surrounding it with underscores or double asterisks.
_italicized text_ **bold text**
Create a bullet list by simply beginning each line with a hyphen (aka "dash") and a space. Numbered lists are similar: begin each line with a digit, dot (aka "period"), and space. Here they are working in tandem with paragraphs:
I've been doing musical theatre for a long time. Here's some of my favorite roles: - "Laurie" in _Little Women_, 2015 - "Chad" in _High School Musical_, 2010 - "Jimmy" in _Thoroughly Modern Millie_, 2007 Notice that sweet empty line after my list, and also after each paragraph? They are important, as you will see in a moment. 1. I will eat all your green M&M's. 2. I never practice at home. 3. Kissing scenes are the best.
After every paragraph and list (but NOT after each list item), press Enter twice. An empty line tells Markdown you're starting a new paragraph or list.
The text you want to be clickable (like this) is wrapped in square brackets, while the full web address, including the http:// is wrapped in parentheses. There is no space between the closing square bracket and the opening parenthesis, like so:
[text to show](http://google.com)
Learn more about Markdown on the Cast98 blog.