Going somewhere only knowing one person. Don't do it, j/k
You will find this to be an adventure and a learning experiance. You will learn alot about yourself, as for meeting people that is easy you will be on campus and at bars. You go out with your friend once, mingle meet his friends then branch out and meet your own, one thing of advice don't get to attached to just one person you need to build a social base and it should be more people from school so it keeps you on track with similiar goals.
Jobwise just go to Monster and see what the market it like, and where you can work your new advisor should be able to help you with that as well. But best to have some interviews lined up the week you get into town.