To use WileyPLUS access codes, click on the “My Account” link at the top of any page. From there, you can enter your account username and password and then select a pdf to download from our site using either a code or by purchasing it online. Then open up Adobe Acrobat Reader (or another PDF reader) and type in the 16-digit activation key as prompted when opening each book for which you have used an access code to unlock the content. If problems persist, please contact customer support with detailed information about what happened to help resolve them promptly!