No need to be nervous mate, college interviews are really easy They'll most likely just ask things like why you want to take the course, what you do in your spare time, simple things like that
I already had a Sixth Form interview and they asked questions like that so I guess it will be the same type of questions.
haha don't be scared about your interview, When I went for a college interview I was rambling on about something and I almost screwed it up completely for not thinking before I spoke
Congratulation! Welcome to the college life. There will be a lot of fun and hard work, an enjoyable package!