To promote a website you need proper SEO. There are many steps in SEO. Such as search engine submission, directory submission, Article, submission, Etc., You can try with them manually. Meanwhile Paid SEO services would give you best results in promoting a website. You can get best paid SEO service from
http://www.tucktail.com/increase-website-traffic/This tool does a lot of automates SEO services. Some of them are,
You can submit your website to leading search engines like Google, Yahoo!, Bing and AOL at just one click.
Easy submission of your website to over hundreds of leading search engines and directories.
Key word generator would help you to generate niche keyword related to your website and bring in traffic.
It has still many more features. These could help you to promote your website and get better result in SERP.