My dad is about to get the new iPhone tomorrow and while all the music purchases and $100 credit (as of current) are on my iTunes account, which currently has my iPod and my mothers iPod on it (she can't figure it out so I just do it). I don't currently have an iPhone but I plan to buy one soon out of contract from someone on craigslist. My question is this, should he have his own apple account? I rather get use of the books, apps and music that he would purchase off my account (he would pay me back for the credit he uses) but I don't want anything jeopardized for when I get an iPhone. What should I do here?