The best starting point for general introductory information is the menu located at You should especially pay attention to Survey of Current Business(SCB) articles on subjects you are interested in, as they contain most of the theory and methodology of the I-O tables. The SCB articles on given subjects are listed through the above web page.  Refer to as well “Concepts and Methods of the U.S. Input-Output Accounts,” at, and “MEASURING THE NATION’S ECONOMY: AN INDUSTRY PERSPECTIVE, A Primer on BEA’s Industry Accounts” (Revised May 2011), at