There are so many exchange sites that are our partners but I am not familiar with all the exchange sites that are on the market. I usually use binance or latoken. In my opinion, the two exchange sites are very easy to use and very updated to display the latest conditions of the development of crypto currencies. But I also do not rule out the possibility to use local exchange sites in my country like Indodax. But this local exchange site is only limited to certain coins or tokens.