Trading is unpredictable of course but usually it cause loss for whom who do long term trading. Like if we buy bitcoin and hold for months. It's not that much risky for day Traders and Immediate traders. You can hold your coins for one two days (if you are a trader) but don't hold for long time other wise be ready for loss.
Then being master is not easy. it need years to be a trader master. One suggestion start with altcoin trading. if you are a newbie. Altcoin trading don't need huge investment.