Check out BrightLocal blog - they have good resources about Local SEO <a href="https://www.brightlocal.com/blog/" rel="nofollow">https://www.brightlocal.com/blog/</a>
Also you can check tools for Local SEO at <a href="http://www.whitespark.ca/" rel="nofollow">http://www.whitespark.ca/</a>
From my experience the main success factors in Local SEO are G+, maps, homogeneity of addresses, links and mentions in local blogs and services. Also the big weight is reviews in social networks and yellow pages. And you should constantly track & analyze competitors