Talk about your business. Carry business cards with you everywhere. Ask for the referrals from clients, friends and family.
Blog about your company, through your website or separate blog site. Have your ultimate goal in mind from the beginning and blog professionally. Build your image online. Learn to use SEO, Search Engine Optimization to drive customers to your site.
Twitter, Facebook, LinkedIn and other social networking sites can help get the word out. These sites can be a way to build a viable online presence and, if used creatively, you can sell products, run contests, offer deals found only on your website, and interact with your customers.
If you are completely lost regarding this technology, ask a college student or generally anyone under the age of 25 for help.