Answers to the 2012 NRP exam can be found on playster.com. In order to access the book, registration for the playster.com website is required. Registration is free for 30 days after which a fee will be charged.
Playster.com does not only offer educational resources, but also books, music, games and movies for a variety of ages. Once registration is complete, the new subscriber has unlimited access to Playster and can create play lists. New additions are added to the site's collection every week. In addition, Playster also has an app available on the Google play store, enabling mobile use of the service.