When I am new in cryptocurrency, I want to use Poloniex as my first exchange ever. Newbies can easily handle Poloniex exchange. When I discover about the Kucoin because I got some airdrops in campaign and they listed in Kucoin the token, I tried to use Kucoin. And after I sold my airdrops in Kucoin, I found out that Kucoin is a friendly exchange and easily to use. There are also lot of tokens found in Kucoin. Kucoin is my favourite exchange right now.