As for test prep questions I think www.cccure.org has the best ive seen. I used them for studying for my SSCP and was very happy with the questions in the practice tests.

I am currently studying to take my CISSP on June 11th and I am using cccure.org for my practice questions.

As for materials, I use Shon Harris CISSP book, ISC2 Official Study guide, Mastering the 10 Domains CISSP book, and the Gold Edition CISSP prep guide.

I passed the SSCP fairly easy with the same methods and material types, hope it works out for the CISSP :-)