Hello,
Your device must be connected to a wireless or data network in order to download Kindle content to your Kindle reading app.
1. From the Safari browser, visit the Kindle Store website:
o iPad: Kindle Store for iPad
o iPhone or iPod Touch: Kindle Store for iPhone and iPod Touch
2. Sign in to the Kindle Store with the same Amazon account you used when you registered the Kindle reading app.
3. Browse for Kindle titles you want to read:
o To buy a book, tap Buy Now with 1-Click.
4. Click Read now to open the book in your Kindle app.