Quality Content and Engaging Your Fans
The first thing to do is make sure that your page is well organized and full of content. Fill out the info page and the about section, put up pictures or videos if you have them, and post something to the wall. It can be a big turn off to see empty sections of a Facebook page and many users will just turn right around if they see them. It makes it look like you are either lazy or you don't really care about your own content, and if you don’t, then why should anyone else?
The next basic thing to do to get fan page likes is to consistently post quality content that shows up on your fans’ news feed. This is probably going to be one of the best ways of spreading awareness of your page.
Every time one of your fan's comments on one of your posts, or likes it, most of his friends will see it. If you are posting interesting content, it can really spread. Many people have hundreds, even thousands of friends, so with just a few comments, you have the potential for tremendous exposure.
Just don’t overdo it. If fans notice that their walls are overstuffed with your posts, they may get very annoyed very quickly. Consistency is much more important than volume of content.
It also really helps if you engage the people who comment and like your posts. People feel much better to know that you are actually reading and thinking about what they say. Also, consider posts with open-ended questions that will spur conversation. People love sharing their opinions, especially when they feel that others are actually interested in them.