Channel 0 is an all-inclusive look into your live channel package. This guide is accessed by tuning into channel 0 (hitting 0 on your remote). From Channel 0 you can view all of the channels that you are subscribed to and tune to them. You can also search your channels based on categories, such as Kids and Family, News, and more. From Channel 0 you will also be able to see what channels you have added as favorites; also allowing you to select and deselect channels as favorites.
For more information on how to access Channel 0, please watch this video.