When u have your kindle on wireless internet connection it automatically syncs to your account (and to other Kindle devices owned by you provided they are also connected to the wireless internet at the same time. You may find your latest book in the 'Archive' list, in which case select it and it will download to your library

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I have a Kindle app on my ipad and android phone and so long as they are both simultaneously connected to the wireless internet, they will sync together so that both devices display the current page read to and the latest downloads

. Also when on wireless they sync to your Amazon account so any new items bought from the site will be transferred. Hope this helps
