Cryptocurrency trading is very risky you may end up losing all your money, so before you start trading cryptocurrency you should know the risk you're going to face and that is losing your money because in trading there's no guarantee that you're going to earn since the market is unpredictable. So what i can recommend you before start trading cryptocurrency is:

1. Study the basics about trading (reading graph, candle sticks,etc.)
2. Study different strategies in cryptocurrency trading (Google and youtube would be a great help)
3. Study coins that has potential (Do your own research)
4. Apply your learnings, so i would recommend you to use demo trading there's a lot of sites that has a demo feature meaning you can experience trading without investing money.
5. Once your confident enough try to invest small capital to real trading.
6. And once you're familiar in trading you can now start trading cryptocurrency.

So remember that there's a high risk in trading cryptocurrency so you better invest only what you can afford to lose.