beside trading and investing in cryptocurrency, there are 2 other ways to earn money. They are working for bounty campaigns or joining airdrop. You can search google to get more detail about these ways. But to be honest, you should not take part in airdrop.
There are really ways how to earn here and that includes rendering your service by joining signature campaign, and some are through social medias, if you are good at designing, making logos you can also use it here, so there is no way that you cannot earn here for as long you have the eagerness to do so.