IPad / IPhone Users:
If you are selecting the version for iPad/iPhone, it requires an application to be downloaded in order to read books. You can obtain this free app by going to the app store on your iPad/iPhone and downloading it.
If you have a newer Kindle that has e-mail access, you should open the e-mail sent to you with this link directly on your Kindle. If you have an older version of the Kindle, then you will need to download the file to your computer and then get it moved over to your Kindle. He is a link to Kindle support if you need any assistance: http://www.amazon.com/gp/help/customer/display.html?nodeId=200503360.
NOTE: The download link will expire within 48 hours of receipt. Make sure to download your product as soon as possible.