This video tutorial is in the Fine Art category which will show you how to use & understand studio flash. Right in front is the flash ring. It controls the direction of the flash. The most important buttons are the up and down button that controls the power of the flash. Five is the lowest power and it goes up to ten. Starting with five it goes up by one stop increment. You don't need to use any of the other buttons. All you need to do is to turn on the flash with the ON / OFF button, point it in the right direction and then adjust the power of the flash.