The following sites are very good sources for investment related information.  All of the sites are free, although some require you to register. 

Business News Sites
CNBC                           http://www.cnbc.com/

CNN/Money                  http://money.cnn.com/

MarketWatch                 http://www.marketwatch.com/

General News Sites

Washington Post             http://www.washingtonpost.com/

New York Times            http://www.newyorktimes.com/

Business Magazines

Business Week               http://www.businessweek.com/

Forbes                            http://www.forbes.com/

Stock Information

Yahoo Finance               http://biz.yahoo.com/p/g/ge.html

MSN Money                  http://money.msn.com/stocks

Stock Charts

StockCharts                   http://www.stockcharts.com/

Historical Prices

Yahoo Finance               http://finance.yahoo.com/q/hp?s=GE

Mutual Fund Information

Morningstar                    http://www.morningstar.com/

Bond Information

Smartmoney                   http://www.smartmoney.com/bonds/

Personal Finance
Smartmoney                   http://www.smartmoney.com/pf/

Tax Information

IRS                                http://www.irs.ustreas.gov/

Earth View                     http://antwrp.gsfc.nasa.gov/apod/image/0011/earthlights_dmsp_big.jpg