Manage risk.  Trade better.
Paper currency background, dollars, european and russian money.
The Forex market is a 24 hours, 6 days a week global market.  It is highly liquid with 4 Trillion US dollars traded daily (estimates change). 
Three major events lead to the birth of today's foreign exchange market:  The suspension of gold convertibility into the United States Dollar in 1971, the ending of the Bretton Woods system in 1973, and the floating of the British Pound by the UK government in 1973.   Participation in this huge market was limited to large international banks.  Gradually, thanks to the efforts and strong will of individuals working in the fields of economy and finance, barriers to entry into this market fell down.  In 1972, the Chicago Mercantile Exchange (CME) created the International Monetary Market (IMM) and listed seven currency future contracts.  Speculation and  hedging trading volume of these contracts increased year after year.  Today, technology and the Internet make it possible for many to invest in forex and/or currency future contracts from about anywhere.
                           If you are
                           with the
market, consider purchasing a book that discusses Forex and currency Future trading from one of the familiar online bookstores.
The United States Federal Reserve building in Washington, DC.  The Fed's monetary policy has a direct influence on the value of the US dollar.  The Federal Reserve acts by raising or lowering interest rates, and regulating the money supply which is money pumped into the US economy through the US banking system.
Currency exchange counter at Grand Central Terminal in NYC,  United States.