Technical analysis is the analysis of movement based on arithmetical (formulas, graphs, charts, etc.). By combining the movement of an instrument with a specific mathematical formula. Can provide a picture or predictions of the future. Well you have to be careful and pay attention to the words picture / predictions, so accuracy is not 100%. The amount of accuracy that is the art and the level of each individual trader. The more you diligently honed formula, evaluate, integrate, and so it will be more precise.
The purpose of the traders using technical analysis, among others to:
1. volume of transactions
2. trend
3. Psychological levels (support and resistance)
4. The period of time that occurred.
Technical indicators are created by many technical analysts, and if the collected amount can reach 250 more. With a variety of purposes. And with the level of complexity varies. But few entries you do not need to use all (because it is not possible too), just use what you truly understand, a little better and simpler but you control and know where the strengths and weaknesses of technical analysis.