Firstly, you need to know what is trading. Trading is all about buy and sell. Its obviously a risky thing for all. So without knowing proper knowledge about it, don't go for now.

Secondly, you must have to know about the calculation of percentage and how to calculate quickly, market analysis, trading resistance and support etc.

Thirdly, though it is a risky thing because there has a chance of losing your money from trading. So you need to afford as much as you can. That's why, invest that amount which you can afford.