Investing in the market quickly and inexpensively is made easy through Exchange-Traded Fund or ETF. This is an investment tool bartered in exchange of major assets such as stocks and bonds. It is traded just about the same price as the net asset value of its underlying assets through out the trading day. These are also index funds that help investors focus on what asset classes to choose. ETFs follow a certain index. Some of which are Dow Jones Industrial Average or Dow 30, Standard & Poor'...