⭐ Merited by jovs (2)
Trading is a good way. Setup an account on an exchange and buy a little of a cryptocurrency you are interested in. Study the charts and try to buy in a dip of a popular coin. Once you bought a coin, set a sell price a bit higher enough to offset your trading fees and to make a small profit. Rinse and repeat until you grow your stack. Just remember to buy low and sell high. 
I support this, anyone can make money with cryptocurrencies by trading. Because in trading you will just manage your money to trade it using cryptocurrency. It is a good way of making profit with your money in just trading. But be aware in the charts because it can affect your tradings.