We are talking about a Schutzhund club, correct?
I can't help you locate one in your area, but I think you should start attending as soon as you find one you like. Even if you haven't gotten the puppy yet. I'm not sure how much you know about the sport, but it's very helpful to attend for a while before doing your own training.
Don't just choose one because it's closest to you. Find one that uses training methods you're comfortable with.
Hope you find a good club!