It's hard to say what is best, since best can mean many different things depending on your perspective. I think it's best personally to start trading something that has a very low per token value, buying a few hundred TRX right now for example might pay off, or ETHLEND, SiaCoin, things like that. I don't really care for TRX as a project but it's bone cheap right now and when the market picks back up it'll likely have a nice payoff. There's no guarantees in life though, remember to only trade with money you can afford and are OK losing. Otherwise, you will invest with your emotions and that will cost you big time.