I too am not sure why you don't just sign up. Is it because you are a boy and you are afraid you will be made fun of? If that is the case all you have to do is tell the other boys that make fun of you that you are surrounded by beautiful girls in tight leotards and you get to dance with them and lift them and I'll bet they will shut up real quick!!!
But either way, just research some dance studios close to home and find out their prices and hours and take your pick!!!