Industry reports and surveys provide an overview of the industry. They might include forces impacting the industry, major players, current trends and information on how to analyze the industry. Below are some recommended sources.
NAICS is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.
To learn more about a specific market, see if you can locate a trade associations. Associations often provide information on industry trends, consumer buying habits within that industry, and help with networking. Some information is freely availalbe and other information may be restriced to members only.