ChristmasInJuly

So I'm in my first semester of a Clinical Mental Health Counseling program at a school with a basketball following. I love it, but need more money. A professor suggested I apply to a GA in another department for no other reason than financial need. I knew it was Sports Commerce before I applied and I didn't think I would hear back despite the department rep saying he's had Counseling GAs in the past and would consider more. Haha, the joke's on me because I got an interview with the guy and now I don't know what I'm going to say. At all. I'm a football person and although I've worked with sports reporters in my former life, I was never actually a sports staffer in any capacity. I also don't know what to expect in general since I'm still a new student. This is my first GA interview. Advice?