See ChartSchool! You can learn all about the analysis of stock charts (also called "Technical Analysis").

Technical Analysis is the forecasting of future financial price movements based on an examination of past price movements. Like weather forecasting, technical analysis does not result in absolute predictions about the future. Instead, technical analysis can help investors anticipate what is "likely" to happen to prices over time. Technical analysis uses a wide variety of charts that show price over time.

More: http://stockcharts.com/school/doku.php?id=chart_school