Learning Teams!

My academic adviser told me that it would be smart to take a couple workshops this week before starting in on my class next week. I agreed, so I am taking two of them.
Each one is only 3 days long. One is basically understanding the similarities between going for an Associate's Degree and a Bachelor's Degree. The other is about Learning Teams.
I'm starting to be a little nervous about working with a Learning Team. Basically, I will be working with 2-4 other students in each class to complete assignments. Of course there will be work I have to do on my own, but there will be quite a bit that I have to do with the Learning Team. It counts for 30% of my grade. Basically, the work I do in the class can potentially affect 30% of someone else's grade in that class, and that 30% of my grade will be based on work someone else will do in the class. That is quite a bit of responsibility! It will also take a lot of effective communication and trust in total strangers with whom I only communicate with online to do well in each class.
It is overwhelming to think about but I think it might get better once I am actually in the class and actually involved in the team work. Pretty much I have a case of fear of the unknown right now lol.