My opinion (How to avoid scams and not be sheep for hair clipping?). The most important thing is how much money you have for investing.
The more it is, the easier it is to make a decision (and do not invest everything, especially not to pledge the house and invest).
And then you can choose:
1.) a thorough, exhaustive exploration of the ICO, as proposed by @ charles1 (greater security, greater potential earnings but plenty of own work and time);
2.) investment in coins (after the ICO) when listed on the strong stock exchanges as the @ crypto-punker (greater security and lower potential earnings, but most of them);
3.) investment when already listed but on a weaker stock market (eg, etherdelta and the like, means the check is made);
4.) Insider Information;
5.) intuition;

1. various variants 1 - 5.

And as you already know, this crypto game is not for those of a weak heart.

Security or earnings - an eternal dilemma.

This topic should be more frequent on the agenda because everyone needs reliable information.

Greeting.