How do I rearrange my action bar?
And where do I get a pet?
What I do, is ESC to bring up the menu, then interface, then actionbars. You can put up to three more on the screen, but you won't need them because you won't be getting to any high levels. Still, make sure 'lock actionbars' is checked so you don't accidentily drag a skill off of it in combat. Now, hold shift and click the skills then drag them to a different slot, or off the screen to erase them. Click 'P' to bring up a list of skills.
You get your pet at level 10, there will be a quest for it.