I'd take a stroll through the archives and you'll see a ton of helpful posts on how to optimize your site via content and SEO. Past site review requests are usually full of information from a variety of knowledgeable folks, as well as posts related to Search or SEO, that can be applied to any site.
For local citation building, hit getlisted.org and you'll find a nice listing of useful sites to register your business with. Check out Google and Bing's Webmaster tools, as well as Google's beginner's guide to SEO.
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