And do not forget to manage your cryptocurrencies after you earn it. For example buy cryptocurrencies that will generate you more cryptocurrencies, like IOST or Crypto.com
.
Based on all the methods listed in the article, I can say that the most interesting and profitable one is to perform custom work and receive payment in cryptocurrency.
Or you can buy a cryptocurrency that will allow you to keep a node, which will regularly bring you additional funds in the form of this cryptocurrency.
The choice of nodes is extremely large, most of them are useless, so do a good analysis. The most profitable and easy to configure, at the moment, is the IOST node.