Hey,
You'll need to register each Strategy Guide separately in order to get access to its corresponding Question Bank. To register your books, follow the instructions on page 7 of each of your Strategy Guides. Alternatively, you can also register your books here:
http://www.manhattangmat.com/access.cfmLet me know if you have any other questions.
Best,
Matt Mapplebeck
Student Services Associate
Manhattan GMAT