Before you begin trading stocks live, it is important to create a stock trading strategy to keep you inline. A stock trading strategy is about having a plan of action before you execute a trade. This means, know what you are looking for in a stock as far as entry and exit price, management in between executions, and where to place your stop loss.
Be sure to take plenty of time practicing trading stocks, in demo mode, before executing stock trades live. This will help prove your system or show you where to improve, and help to build confidence in your stock trading strategy.