Here is a quick graphic list that I created with the current Top 10 Excha lists according to cryptocoincharts.info. They go by market share. Hope this list helps newbies out there.
I think this graphic is too old 
To me, top 10 are: Binance, Huobi, OkEx, Bitfinex, Bithump, Kraken, GDAX, Upbit, HitBTC and Bitstamp