On the left side of your “Trading” screen below the “Select Symbol” box is your trading box to place orders.
To place an order first Select the cryptocurrency pair you want to trade from the “Select Symbol” symbol box. This will populate all fields on you trading screen with the data of the pair you selected.
In the Order box below (“Select Symbol”) you can place your trades. First enter the amount you want to buy or sell, then decide on the order type you want to place. A “Market” order will attempt to buy or sell at the current market price, meaning the order will be placed and executed without you entering a price. A “Limit” order is different in that it requires you to place a price at which you would like your order to be placed once that Limit price is reached. If your Limit price will not be reached your order will not be place in the marketplace. Not that to place a Limit order the price you place for a “buy” order has to be lower than the current market price, and if you place a Limit sell order, then your price must be higher than the current market price.
Once you have place an order you will see at the bottom of your screen a notification regarding the order you place.
Another way to place Limit buy or sell order is simply by clicking on a price in order book which is located beneath the chart (“Buy orders” or “Sell orders”). This will copy into your order ticket the same amount and price of the order on which you clicked allowing you to then adjust the amount of the trade you want to place.