If you want to see some scary numbers, go to Wisconsin Senator Ron Johnson's webpage, and view these charts as you listen to his presentation to the Wausau Area Chamber of Commerce 11/15/13 at Northcentral Technical College. This might be the most important lesson you get for free.
Senator Johnson looks past the usual ten-year averages, the percentage of gross domestic product comparisons, and puts real numbers and dollar signs on America's debt problem. You may be surprised. Pay attention to how much debt there is for every person in the USA. Hint: If you had that much money, yYou could buy three new cars with that cash, if you're a good shopper.