These sites online are very helpful for the purpose they serve. They were designed to lead the unsuspecting candidate down a path of self-destruction.
Just kidding. The reason I mention the following sites as helpful and recommend researching them is because everything you may want to know about a company usually gets nicely packaged for social media.
Google+
Facebook
Twitter
LinkedIn
SimplyHired.com
Monster.com
CareerBuilder.com
Indeed.com