Submit your site to various search engines and invite your friends, friends of friends and every person you know to visit your site daily to improve your page impression
Some really good posts here. Personally, i'd say article submissions, blog commenting and quality directories. But every webmaster has their own favourite. Experiment and find which one works for you. One important piece of advice though, keep at it and be extremely patient. You won't see the results of some of your best marketing techniques for months sometimes, so be cool and be patient.