I am new to ICO investing. I invested 1 btc in adel coin ICO and it has turned into 2.3 btc. I am wondering if ICO's are a sureshot way to get massive returns?
NOT AT ALL.
if you earned a profit once that doesn't mean it will be repeated again. to be honest in most cases you have a much better chance if you play a dice game instead! seriously, just put the money in and roll on 2x, you will have a better chance.
some people say you have to research the dev, the project, etc and while that is all good but none of it is going to change much about your ability to speculate the final price of your ICO tokens. the risk is lowered by a little bit, which won't change the final result.