After reading two books and creating over 600 index cards I started taking the practice exams...and boy are they humbling. I am using Sybex and Boson practice questions.
McGraw Hill has some of their free quizlets online as well if you want to take a stab at those for more practice questions: https://www.mhprofessionalresources.com/sites/CISSPExams/exam.php?id=AccessControl
What did you put in the 600 index cards? Can you share a sample content? TIA!