To rotate your monitor you'll need to add the following line to /boot/config.txt using the following command
sudo nano /boot/config.txt
You can also set this value to '3' to have a flipped vertical orientation.
Edit the /home/pi/.config/lxsession/LXDE-pi/autostart file with
Reccomended To disable the screensaver you'll want to comment out (with a '#') the
@xscreensaver. You'll also want to add the following lines to that same file
@xset s off@xset -dpms@xset s noblank
Optional To remove the panel at the top of the screen to comment out the
@lxpanel lines. If you want to be able to easily access the "menu" at the top of the screen do not do this step.
sudo apt-get install unclutter
unclutter -idle 0.1 -root to /etc/xdg/lxsession/LXDE-pi/autostart with
sudo nano /etc/xdg/lxsession/LXDE-pi/autostart
Next Step: Configuring Sound