Starting a search can be challenging, however, if you create a strategic plan before you begin your search for informaiton sources becomes simpler.
One of the best places to look is within trade organizations because they support industries. Trade associations and organizations provide fundamental and expert advice on where the industry is headed, statistical data, and expert advice about products, services, and trends.
Much of this information is free and available online. "If it is a members-only site, see if the association has been quoted in business trade publications, newspapers or magazines. You can do this by using their name as a search term in the databases listed under the "Business Articles" tab.
http://libguides.auburn.edu/content.php?pid=485793&sid=3983384