The greatest ways to make bitcoins is from trading and from signature campaign and if you have any technical skills then it will be an added advantage as you can sell your services and can earn bitcoins regularly as you don't have to invest any money into it the only thing you invest is your time and efforts.
Trading is a good way to earn some money if you have the patience and the bank roll to enter the coin at the right time and to exit at a profit and multiply your coins but making money from signature campaign is not true as it is not easy to make the money as you say from a campaign as the rates are really low.
You know i earn better from signature campaign than trade, Because in trading all your coins on the risk, and in signature campaign our bitcoin is not on the risk, if we do work than we earn from it. But it is right, we earn not high but we could earn from signature campaign.
But, we just earn bitcoin from signature campaign is very little payment than trading.
In trading, we can get more money if we're know knowledge about trading, about
How to analysis price of market, If we've mastered it all, we'll easily get an advantage.