Supply & Demand. It's a simple enough graph, basically just two lines crossing in the shape of an X. But that humble graph of supply and demand curves is really an elegant and powerful tool for economic analysis. This is the place where you can learn how to make it work for you.
Only have a minute? Read our Supply & Demand Overview
Our Ph.D.s scoured the Web (so you don't have to).
We've got a lotta' links: video, music, websites, photos... you get the drift.