The Xbox 360 controller is used during gameplay and cheat code entry [ view Xbox 360 Cheats], on the following page the image below will be referenced to describe how Xbox 360 cheats are entered.
Many times abbreviations will be used in cheat codes, an example of this is saying press LB , meaning press the Left Bumper . (#3 on the image)
For details on all of the buttons go to the next page. You can bookmark or print the following page for easy reference until you are familiar with the controller and the button descriptions.