Generally it is not to where all learned and then integrated into the inside to dance. Instead, you can join by signing up directly with the leader or teacher present.
After joining, the leader or teacher will arrange your learning. They will either teach you individually, counsel you individually, or let the students with a good degree lead and help each other.
At the beginning, it may be more important for you to observe more, imitate more, and focus on self-study, so don't be afraid of being laughed at. Of course, you can also make friends with one or two dancers who can often help you.
In fact, they often dance those few dances, after some new students, the teacher often rolling teaching. It won't take more than a couple of weeks for you to get through it. In a few months, you'll be an old, good student.
Don't be too nervous, join in and you're halfway there!