Hi richardkramer and welcome to the forums.
We have a number of existing topics on this subject, so I suggest you search both the Marketing and Social Media categories, where you’ll find those discussion. A couple you might want to look t are Want to increase fb fanpage likes and How to increase facebook fan page likes or how to get relevant traffic?.
There is also a very similar current topic here:
http://www.sitepoint.com/community/t/how-to-promote-my-facebook-fan-page/116496