Everyone that uses Facebook to promote their service or items do it differently. How do you do it? The way that I promote is by creating a fan page and group on Facebook. I find that this is the easiest way for me. I start off by inviting my friends to like and join first and then I promote the page/group in order to bring in more people. I always keep my content updated for my followers and members. When you have a strong group/page, the more people comes in and that helps you be more successful in what ever business or product that you are promoting.