Hi!
I think you might get this answer from a lot of people, but honestly just be yourself and don't be nervous! they are really nice and friendly and are not out there to grill you (atleast from my experience and from what others have said as well), the questions will pretty much be personal and about yourself because they are just trying to get to know you! also, if you have any rough patches, like failing classes, then be ready to answer questions about that (this might depend on who interviews you, i didnt get asked questions like this but i know others did)
Goodluck!! 🙂
i'm starting this february 2014 cycle so if you get accepted we will be in the same class! 🙂