There are many primary and secondary research sources that you can use to find evidence for your Final Project. Here are key links and research tips for each type of source.
Most companies will have a web presence, but keep in mind that many will have both a "public" web site and a "private" web site (e.g. a password-protected intranet or internal site) so you may or may not be able to find out much this way.
What kinds of documents are you after? You want to answer the 5Ws (who, what, where, when, why).