Folks I've had several people ask about multiple devices and recent apple changes and this is a great article for general knowledge -
Manage Multiple Apple Devices In Your Family With iCloud and Apple ID
http://www.everythingicafe.com/manage-multiple-apple-devices-in-your-family-with-icloud-and-apple-id/2013/02/06/
Note that there's a "mistake" in the iTunes section. OK, it's not so much a mistake as an instruction for iTunes on Windows. To create the new library on your Mac, you start iTunes while holding down the alt key and not the shift key as stated.