Sometimes it is best to go for your local exchanger (some countries have their own exchange) so if you do, maybe it’s best if you go for it, ask those living in your location that are also into cryptocurrency. If not you can choose exchanges like Cryptopia, Bitfinex, Poloniex or Binance. Those living in the states might prefer Coinbase due to their level of safety. But what some people don’t like about them is fees.