Re: Where is the list of apps?
Click the Ubuntu icon at the top-left of the screen, then click the second icon along the bottom of the Dash that opens up. Or, right-click the Ubuntu icon and choose Applications. Or, hit Super-A.
Originally Posted by glenntk
Every version of Ubuntu ever released will use your full processing power when needed, including 12.04.
[*]Is there a setting to assure Ubuntu is using the full processing power (as 9.1 had)?
The default Ubuntu 12.04 image uses the Unity desktop and my answer to your applications question assumes that you're actually using Unity. It would take a conscious decision for you to install Gnome.
[*]I keep hearing about different GUIs, I'm using Gnome I think and have heard of GTK+; are there other "faces" I can put on Ubuntu 12.04 LTS?
You can certainly install a different desktop environment. The most popular alternatives are Gnome Shell (Gnome 3), KDE, XFCE and LXDE; all of these are available in the Ubuntu Software Center for installation. Once installed, you can click the Ubuntu icon on the login screen and choose the different desktop to use. You can have multiple desktops installed at the same time and choose between them at the login screen.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.