Google Adwords, done right, will make your phone ring as much as you want. Done wrong and it will cost you a bunch of money and your phone wont ring.
Magnets to leave with any customers you get.
Make a facebook page, like it on your page, invite your friends to it and tell them to share it. Post on your facebook page, offer a fb special, ask customers to like and share your fb page.
Tell everyone you know and meet what you do, phone calls email etc.
Leave cards everywhere you can put or post them.