SIRIUS XM Satellite Radio

What is the U-Haul/SIRIUS XM receiver?
What is SIRIUS Satellite Radio?
What will I hear on SIRIUS and THE BEST OF XM?
What cable do I need to hook up my music player to the system?
Does the in-dash receiver charge my music player?
Does Sirius XM have commercials?
Will I receive the SIRIUS signal in Canada?