In my investigation about Bitcoin the best way to earn money through Bitcoin is signature campaign job. Which is easy and safest way to Bitcoin . Every beginner start their Bitcoin earning with this method. It is one of the free way to earn bitcoin. Another free way to earn bitcoin is cloud mining, using different Bitcoin related websites and games. But in those above method earning is low. For more income you can try Bitcoin investment which is risky but effective . Another way is hardware mining, trading. In those thing you have to invest some of your own money at first.