I found it is nice to share the "The memory Palace" by Prashant Mohan which I downloaded today from Thor's website. After quick navigation of this notes I can tell it is one of the most helpful study notes that could help you for the final stage or as an exam essentials. Remember understand every concept for the CISSP exam and always think like a cyber security ADVISOR not FIXER. In these notes you will find all the CISSP concepts handy at one place, and will help you at the final review before taking the exam. Best of luck to everyone.