First, you may want to start telling your friends about your business. Facebook fanpage is also very effective as you will be able to reach not only local but worldwide audiences. Make sure you optimize the page properly and update the site regularly. Whats the latest product? Is there any upcoming promo? How about free samples of your product? Bonus referral perhaps. Things like these can be done without spending too much for advertising. Create a link wheel, and write some articles and submit these articles to online directories. Don't forget the backlinks. That's the key to drive your customers back to your main site.