You have to choose your earning strategy based on your character traits.For starters, study scam ICO history and history of how shitcoins have sprung about. That way, you will be a little familiar if a coin is turning into a shitcoin or not(and if an ICO is already becoming or will be a scam). You can also try testing on trading on small amounts of money first while practicing and if you get the hang of it, only invest big by then.