When studying the sites of exchanges and reading coinbase review , pay attention to: the price of the cryptocurrency you need on a particular site; on the size of commissions and their number. If the exchange charges a considerable fee for each operation, it will be very difficult for a novice trader to be in the black. Calculate in advance whether the operation will be profitable after deducting the commission; withdrawal limits. If you can withdraw only $100 per day, this is inconvenient. At the initial stages, when the profit is still small, this may seem insignificant. But as soon as you start earning more, the restrictions will get in the way; minimum replenishment threshold - evaluate whether the amount is feasible for you