Here are some keyboard shortcuts that let you move through sections of your iTunes 11 library.
1. Use these keyboard commands.
CMD + 1= Music
CMD + 2= Movies
CMD + 3= TV Shows
CMD + 4= Podcasts
CMD + 5= iTunes U
CMD + 6= Books
CMD + 7= Apps
For more, see the original article at the link below.
The Ultimate List Of iTunes 11 Tips, Tricks And Changes | Cult of Mac