You can think of demographics as providing information about who your consumers are, and psychographics providing the why they purchase things.
There are many resources available to help you learn about consumers and their behaviors, attitudes, and opinions.
Image from the U.S. Department of Agriculture, on Flickr, CC BY.
Free Websites
Ebooks:
Household Spending: Who Spends How Much on What (E-book)
Who's Buying Alcoholic and Nonalcoholic Beverages by 
Who's Buying Household Furnishings, Services, and Supplies by 
Who's Buying Information and Consumer Electronics by Understanding the basic economic conditions can help understand and project consumer spending habits. Use the following websites.
