Great reference: http://elinux.org/RPi_Hub

Make sure to use the NOOBS version to start with. It will let you install Raspbian (which is what you should stick with).

Then DEFINITELY change the /boot/config.txt via ‘hold shift’ on reboot or (better still) run sudo raspi-config and edit the config file manually with the guide from http://elinux.org/RPiconfig.

Raspberry Pi config file

Youtube playing from the command line.

sudo apt-get install youtube-dl
sudo apt-get install python-setuptools
sudo easy_install whitey

Then…

yt --player omxplayer # for the youtube interface