Sal Khan
Balance of payments. Current account. Capital account. Currency reserves and speculative attacks. This tutorial delves into how and why countries (usually their central banks) would want to keep other countries' currency in reserve. It then goes into why. Source: Khan Academy (www.khanacademy.org), used under the Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) license. All Khan Academy content is available for free at www.khanacademy.org. Khan Academy does not endorse the World Public Library.
Read this work at the World Public Library (library card needed).