Forex currency trading is now the world's largest financial market. It
trades on average close to 2 trillion dollars every day. Trading is
based on the ever fluctuating currencies of other countries and how
they interact with each other. Forex currency trading is one of the
best ways to invest from the privacy of your own home as a small
investor. Currency trading is a little different from most markets,
because most people don't just sell or buy; they usually trade one
currency for another.
http://www.onlineforextradingadvice.com/Learn-Forex-Trading.htm