Dear friend,
So far, I know for kind of earning money from bitcoin and altcoins.
I start trading when bitcoin 17000. until now, I lost a haft of money.
ICO I have win any ICO. But I did not invest to much.
Lending I think have not join anyone. But I think in the first time you can get profit from lending. But no more later.
And now, bounty, I still reading and research information about it. No one help or support. One day, hundreds of campaign public. But dont know which one scam or good.
I am distempered. Need more advice from you here

Among the four things you just mentioned, the best are ICO and Trading. ICOs are really one of the best things we shouldnt miss out this year cause there is huge profit coming from it. Trading is another thing but you cant do trading if you dont know how to do it. So for you to do trading you will have to learn, and if it doesnt work for you then you can just go for something else or stick to ICO.