Ethereum is heavily used online currency. And Because of this we can earn it many by many way without investing in it. You can earn Ethereum by doing Ethereum signature campaign job. Which is easy to use and a regular trusted way to earn money from it. Another way is online ad viewing job. In which you just have to watch various ads and earn Ethereum. But these are slow earning way to earn Ethereum. Cloud mining and trading one of the fast way to earn Ethereum.