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 or list (but not after each individual item in a list), press Enter twice. This double line break starts 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.