A great way to gain visibility within your market is to write articles. You can easily post your articles on your website. Give them away rather than charge in order for people to sample your expertise.
Let people know the articles can be downloaded and used elsewhere as long as you are given full credit with a link back to your website. The more visibility you gain from your articles the more likely you will be to have magazine and newsletter editors asking to publish your works in their publications. Often they do not pay, but it is great free advertising for you.