So what is day trading?
Day trading is a system of selling and buying financial tools like stocks throughout the day.
If you can manage this properly, day trading can be extremely profitable. But is order to be successful, day trading requires a lot of knowledge and regular updates.
If you are serious about doing this as you main job you will have to continue your studies and try always gather more knowledge. It is simple the more you know, the better decisions you can make and of course at the end you will make more money.
Good luck with your trading.