I've tried a few of the copying sites, like Zulutrade but without much luck. How have you found Etoro? Mostly I seemed to find risky traders opening 100s of positions simultaneously.
As for Binance, super simple and easy to use, definitely put a few dollars into BNB coin as it reduces your fees when you exchange. I think I put $10 dollars in a few months ago and because the coins value has gone up so much, I will probably never spend them all during exchanges.