Whenever in doubt, check https://bitcoin.org or in this case https://bitcoin.org/en/exchanges  

Most may recommend Binance, especially if you also play with altcoins.
I also like Bitstamp, Bittrex and some others, but these will ask for KYC documents.

You should have said if you exchange fiat, Bitcoin, major altcoins, lesser known altcoins...


Edit: about "easy", well, there's a learning curve.. but I am sure you'll find tutorials if you search a little.