About 2 months before my exam date I took the 5 day ISC2 hosted seminar that went over the CISSP content. I then used the next several weekends reading 11th hour CISSP, and taking several practice exams.
The ISC2 CCSP CBK and a self-paced OnDemand course helped me to focus in on course/exam content and the associated certification domains. However, I felt that being an experienced CISSP, in addition to many years of considering the implications of moving to the cloud, with strict provincial privacy regulations related to cloud use, contributed to my readiness to successfully complete the exam.
Although there was flash cards and encouragement to memorize plenty of terminology in the exam resources, I would not suggest that rote memorization of terms or crash study will help with the exam questions. You will need to have a strong understanding of the domain content in order to problem solve and apply the knowledge in scenario type questions.
My work at the time afforded me the opportunity to spend about 1 day a week to study for the CSSIP. Over the course of about 6 months, 4 days a month (20+ days to create a habit), I read the Shon Harris CISSP exam book, and then read ISC2's official CBK book last, so that I would have their specific way of thinking/wording fresh in my head. On those days I took a few notes and used the exam prep materials provided with those books. I also, tweeted one 140 character summary of what I read after each reading session. I never re-read the tweets, but the act of summarizing everything I just read in one tweet was beneficial for me.
When it came time to schedule the exam I had the opportunity to take a 5 day boot camp that ended with the opportunity to take the test on the 6th day. The boot camp was basically a mix of a cram session and review session for me. In the end I don’t think I really needed the boot camp. But, it did not hurt, and I had 5 days of opportunity to network with other future CISSPs, which was very valuable.
As I walked out of the exam with a few others leaving at the same time, I was the only one that thought I had passed the test. I was worried I was being too over confident. But, I did pass it on my first try.
The two things I always stress to people interested in taking the CISSP are to take your time. Study at least once or twice a week for a few months, don’t cram. This allows it to become habit to have the CBK in your head space and on your mind as if it is an everyday thing. The second thing is review the official ISC2 books, materials, and prep exams last. This allows their way of thinking and wording of questions to be fresh in your mind, so that you can more easily answer the questions the way they expect you to rather than the way you would normally want to.
In summery make the CBK a habit, and understand their mind set.