OK, I've decided what kind of pet I want. Where do I find a XXX my level? Go to the side panel for Allakhazam, and under Bestiary, click "By Beast Family..." and pick the family type. Alternatively, check Petopia for one with a skin you like, because pets can never be more than 5 levels below your own once you've tamed them.
Personally i would have been more bothered by the question if the OP was a Hunter , as it has already been said i will just say get your friend to check out the stickied posts here as it sounds like he may need a decent guide.