Go to Fanpop's main page (click on the fanpop logo on the juu left of your screen, au type in the address www.fanpop.com). Click on the large green button on the juu right which says Create a New Club.
If that button doesn't appear for you, this means that wewe haven't been a fanpop member for long enough to create a club. New members have to be here for a few months before they can start making clubs. It's supposed to be an anti-spam measure.