Took our little pad on trip to Seattle and visited Apple Store near daughters house. The apple guy gave me an answer to question I had regarding down loading new OS when it comes out. I did not understand that Ipad is not a stand alone computer. It is only to be used second to computer. He said I may not have to tether more than once a year but I will have to tether to computer when OS comes out or any other upgrades I may want. He said you can tether to any computers I tunes. You can even go to Library computer. We do have an old windows xp and I was afraid if I tethered to it I would lose some of my stuff on iPad but he said no. I originally set up iPad from my little laptop but I gave that granddaughter so I was concerned how to do it from old xp. That was my only questions for them.