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. 
Trading is awesome. However, It is easy to tell a newbie to set up a trade account and start studying the charts without even knowing what to study. It is not as easy as most people always place trading to be and it is not all about the charts or buying at dips and selling at peaks, it takes some learning, some experience and some more learning.I guess what OP is requesting for right now is how he can earn in the crypto community.