Technical charting, or technical analysis, is a way of gathering and processing price and volume information of a particular security by applying mathematical equations and then plotting the resulting data onto graphs in order to predict future price movements. Unlike the fundamental analysis, where the economic, geo-political factors or the financial health of a company are under scrutiny, technical analysis is only concerned with the price and trading volume of a security. In essence, technical analysis focuses on the effect of the previous price movements while fundamental analysis studies the causes that could affect the market.
A good way to gather and process price and volume and etc... is to get yourself some charting software. I would recommend freestockcharts.com , you will have access to free real time charting, with countless valuable tools at your fingertips.