For me the easiest way to earn altcoin is to join bounty program 
yes because its free you can try GCOX bounty check here if youre interested > https://bitcointalk.org/index.php?topic=4608750.0
If you don't have money yet your way to earn in this technology is to participate in airdrops or bounty program in order to get reward tokens in the project you participated and after that if your coin has already in coinmarket then analyze first the market and sell when it has a good volume. yes because its free you can try GCOX bounty check here if youre interested > https://bitcointalk.org/index.php?topic=4608750.0