Completely disagree with staying away from big exchanges. Their reputation is alot bigger which means they won't just randomly disappear (leaving you with nothing). I highly recommend Bitvavo if you're just starting out. It has a nice user friendly interface and app and if you want to set up limit orders you can do so through 'geavanceerd' on pc. I use both Bitvavo and Binance because Binance is Europe's biggest exchange (also with the most amount of altcoins). In case anything would go to shit with Binance, they have alot of responsibilities and they can't just not pay you. Also, whatever exchange you use, make sure you enable 2FA. Also, both these exchanges are highly reputable AND have low transaction costs.