Can I Get A Helping Hand?

Alrighty so I'm new to CSS and I was wondering if any one had some good tips for me,,

(Like how to bold or italicize)

I L O O K E D it up O N L I N E but nothing seemed to be too H E L P F U L

Just trying to get used to it,,, Thankyas!

[[PSS]] I'M T R Y I N G T O M A K E T H I S M O R E W O R D S B E C A U S E I N E E D T O O G E T 100