The only great way comes to mind to earn bitcoins is from trading as I don't see any other better way to make good amount of bitcoins in quick time and which will also grow your bitcoins over a period of time.
Agree with you dude, I think also the best way to earn bitcoin is trading like me like you like us we earn money in trading. In trading we need only harwork, patience and time if you want to earn bitcoin. It depends on your luck if you buy coin have potential to increase but they have secret to know what is coin good to buy make a lot of research if the trader do this for sure they know what coin they want to buy.