How to fit in with new people?

Everyone will no each other but I won't. I'm the only new person in this group I'm going to twice a week. I can't think of much we might have in common because I have not met any of them yet and I'm really nervous that no one will like me and I'll be the only outcast. I want to know how to fit in right off the bat, and become comfortable around these people because I'll be seeing them twice a week for the next two months! Please help me!