I've found that I can switch between my paperwhite and iPad seamlessly - all of my books are available and it saves my place, etc. (I don't have any highlights, but I'm assuming that it would save those, too, if I used them.) So if you've got your amazon account up-to-date, it ought to be fine.  I would make sure that your kindle wasn't in "airplane mode" or anything like that, so that it syncs with your account.I love my paperwhite more than most everything else I own. Is that what you ordered? It's light, the battery lasts WEEKS, and the screen is lovely. I don't know how they do that - I can adjust the light so I can read in the dark, yet there's NO glare. I ditto
@tatertot58 - I bought an $8 case for it, and it does the magical turn it on/off when you open it but it adds no bulk. 4951