If you want to trade, first you need to get an account for trading from Binance, Coinbase (recommended for noobs), Bitfinex or any of the trusted exchanges. After you have created an account, I would suggest you get to learn more about the exchange you have chosen and how everything works in it and read their terms and conditions as to know what to avoid. After that, the next thing you have to do is to learn cryptocurrency trading, a lot of articles on Google search can help you a lot in understanding what it's all about.

For now, all I can tell you is that there are risks involved, and you should avoid emotional trading, and only invest and trade what you can afford to risk. You should also check out the videos on trading, when you watch the demonstration I think it will help you better.