I took the ISC2 training class. I would also use their material as they are the authors of the test. Additionally you can take some sample test for free at www.cccure.org Click on quizzes and select CISSP. You can customize the sample test to specific domains if you want to concentrate on a domain. I also have several books, CISSP for dummies is actually pretty good. I also have the Sybex Study Guide.