Take part in bounty. I believe this is the safest way to earn money.
yes, I agree, bounty campaign is one of the most secure programs, but this does not mean without risk, it's just the most minimal risk in my opinion.
I agree that signature bounty campaign is a good choice to earn cryptocurrency where you will only need to invest is your time and dedication to fulfill the post requirement. The higher the rank you have, the better payoff you get after the end of the ICO sale. You should also research for a good ICO that you wish to join in the signature campaign where you are assured of receiving your token share during the pay out.