Monkeynomics 101: Constructing a Portfolio
Wall Street Journal: The Average Stock Price Is Expensive; Get Used to It
http://blogs.wsj.com/moneybeat/2013/06/04/the-average-stock-price-is-expensive-get-used-to-it/
Investopedia: Beta
http://www.investopedia.com/terms/b/beta.asp
Google Finance: S&P500 Index
https://www.google.com/finance?q=INDEXSP%3A.INX&ei
