Formatting is easy – just think how you might do it in e-mail:

Styled text	**bold** or *italic*	bold or italic
Quoted text	> Trump is so dumb.	Trump is so dumb.
Hyperlink	Go to <https://abc.com>	Go to https://abc.com
Film/TV Titles	(m: Titanic) or (t: Frasier)	Titanic or Frasier

Or you can get really fancy: read the Markdown guide for more tricks.