Make Trading on the Exchange page
Select the "Exchange" option in the upper part of your screen or log in directly to Trading.
Place yourself in the boxes to make the Trading.
Enter the amount of Bitcoins BTC or Mexican Pesos MXN that you intend to Purchase/Sell in the relevant box, as well as the exact price at which you intend to carry out your operation.
Example: if you want to Purchase (left box) $1000.00 MXN Pesos in Bitcoins, just click on the MXN button, then write 1000 in the field Purchase Amount and the price at which you would like to Purchase the Bitcoins. If there is a Seller interested in selling them at that price, your purchase will be made; otherwise, you will have to wait until someone wants to purchase at that price. If there is not anybody, you can then cancel the active order by clicking on the X of the Active Orders box.
Example: if you want to Sell (right box) 0.0032 BTC, just click on the BTC button, then write 0.0032 in the Sale Amount and the price at which you would like to Sell your Bitcoins. If there is a Purchaser interested in purchasing them at that price, your sale will be made; otherwise, you will have to wait until someone wants to sell at that price. If there is not anybody, you can then cancel the active order by clicking on the X of the Active Orders box.
The amount of Bitcoins is automatically multiplied by the “Price” and you will instantaneously obtain the total of the transaction in the same box.
When you are certain of the operation, click on the Purchase/Sell button.
¡Done! Your order has been placed successfully in the “Book of Orders”. Remember that if at any time there is an offer or a bid that satisfies yours, the transaction will be instantaneous; otherwise, such will last in the “Book of Orders” until it is either accepted by someone else or cancelled by you.
If you place an order in the “Book of Orders” and such is still “queued” and has not been made, you can cancel it. Learn how to do it Here.