Re: questions from a brand-noob
The Ubuntu-restricted-extras package. It will pull in a lot of libraries and programs that allow you to watch flash videos, play audio CDs, movies on DVD, and lots more essential stuff.
3) how do I get flash videos to play.
I didn't see what version Ubuntu you have installed so it would be hard to give exact directions. If your version has Synaptic Package Manager, you can find it at System -> Administration -> Synaptic Package Manager. Or you can search the Software Center. Or in any case you can open a terminal and type (or copy and paste) the following, one at a time.
sudo apt-get update
sudo apt-get install ubuntu-restricted-extras
Break it, fix it, learn something.
People who never make mistakes seldom make anything!