That is not the way it works what you are asking basically amounts to driving your car without knowing where you want to go, the first question you need to ask yourself is how much money you want to earn and how much risk you want to take? Until you answer that question any recommendation is useless.

If you want to take a low risk and you do not mind holding for a long time then bitcoin is without a doubt the best choice, you could grab other coins like ethereum if you like but if what you want is to multiply your capital many times over in a short amount of time then you need to pick an ico, but remember the chances that you lose your money are way higher than the chances of getting profits.