How to not feel awkward?

So, some guys in my school started this robotics club and one of them asked me if I wanted to join and I said sure. But the thing 

is that I will be the only girl member out of like 11 or so guys... I've only been to one out of the two meetings they've had. The meetings are on saturday at one of the members house. I don't really know many the guys. I kind of know the one who asked me to join "N" and the person whose house its at "C" is kind of my friend ( we had a class 2gether and we talk on Facebook a lot). Last saturday at the meeting there were only 4 people including me. And so I felt really awkward. I'm really shy anyway and really never have hung out with guys before.. so how do I not feel awkward? 

     The next meeting is tomorrow and apparently more people are going to come tomorrow AND this time basically "C" is going to be alone at home, so I would just be all of us there. I mean, I trust the guys, but since I dont know most of them, how do I not feel awkward? How should I open up? Thank you!!!!