Please click here ----> http://www.amazon.com/manageyourkindle
Sign into your account
Next to the book that you purchased click on Actions then Deliver to My...
Make sure your Kindle is in the drop down box and select DELIVER
Wait 5-10 minutes and it should appearIf it does not appear, please hold down the POWER BUTTON for 20 seconds until the Kindle restarts. Check the library now.