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I run a website that tracks entertainment for the entire state of South Dakota.  While I've made some fantastic strides in gaining traffic, I feel lost on how to manage all those entries in an SEO friendly manner.  I have a TON of errors showing on my crawl diagnostics and I just don't know what to do.  The nature of the website is such that there are going to be duplications all over the place.  I know that I can help some of this by getting my canonical links setup properly (that's coming in my next version of the site's theme), but what else should I do to make those event listings friendly for the SE's?? http://www.entertainsd.com