I second Brett's welcome!
Plan carefully what the sales funnel would be once someone visits your fan page. Make sure that the path from your FB page to your money-making site is easy, obvious and attractive.
Consider testing Facebook ads, both to gain likes from well-targeted users, and to promote your ecommerce site directly.
Somewhere in there, be systematic and proactive about inviting users to sign up for your email lists. Getting FB likes is great but you also want to build connections with your users that are under your own control and don't depend on an outside party.