Modern Money Mechanics is an actual 50 page document produced and distributed by the Federal Reserve Bank of Chicago explaining fractional reserve banking. A PDF booklet subtitled, A Workbook on Bank Reserves and Deposit Expansion, explains how they create money out of thin air and play roulette with the economies of the world. (Fiat Currency Photo courtesy, Dr Nancy Ash, from her private collection)
Access the workbook at this link: http://www.rayservers.com/images/ModernMoneyMechanics.pdf
(Note to readers: The PDF has a broken link to Fed Reserve Bank of Chicago)