It's been quite awhile since I've grown these, however, they send up new pups around the base of the mother plant. When the pups are about 5-6 inches in diameter, you can separate them and repot. They like a loose draining soil, somewhat like a cactus soil. Remember that the leaves hold water in the center of the plant. Sorry I can't remember all my care tips from years ago, but you might do a Google search for bromeliad societies - there's quite a few across the country. Here's one link for you.
http://bsi.org/