I am using a printer of brother mfc and i can not understand how to fax from it

The default setting on Brother MFC printer is Fax. Meaning you will usually see the Fax Button lit with a green light. (If the fax button is not lit, just press that button to get it lit.). Put the sheet of paper you want faxed with the side you want sent face down. Now press the OK button. The screen will ask you to enter the Fax number. Key in the Fax number. Press start. The printer will start scanning that page. Once the first page is scanned it will give you 2 options. You can press 1, if you have more pages to send to the same Fax number. or you can press 2. This will tell the printer(Fax) it is just a 1 page document and the machine starts dialing. Wait for the fax completed message. Please make sure that the machine is connected to a working phone line before you start.