I suggest you to take a look at google onpage seo pdf and apply it on your site. Next, try to build anchored keyword dofollow backlink from related pages.
Do make fresh content, best site structure, Keyword Research, Competitor Analysis and get quality baklinks from social networking sites, directories, blogs, forums, press release and article. You can get more search engine traffic with PR.
First you should do your on-page optimization very effectively.You should choose the targeted keywords for your site and then start building links for that keywords.While choosing the keywords be careful in selecting the user friendly keywords. Pick up the best performing keywords. just do not think about the high performing keywords but think of the keyword which are going to give you more business.