Put the book in the cart, checkout and enter the code in the discount box. For the code please email Dr. Spieler at email@example.com . Make sure to include your name in the email.
Mac Users: Download the Apple Version
PC Users: You need to download the Kindle App for your PC. Get it here.
Click on download. Then download the Kindle Version of the Guaranteed 4.0 book from the website above. Let me know if you have any more issues.
If you have already downloaded the apple version, see if you can go back and download the PC version. (You might need to use a different email address. Use your Rio Hondo email.)