NOOK Color™ by Barnes & Noble is the first full-color touch Reader's Tablet, delivering digital books, magazines, newspapers and children's books in immersive gorgeous color, and all in one beautiful, thin and highly portable device. This newest addition to the NOOK™ device family was designed for people who love to read every kind of content imaginable - and features 8GB* of space, plus expandable memory, to store it all.

The n for "nook" at the bottom of screenshot is the Home key. When pressed it will take you home.