(ISC)2 is a global, not-for-profit organization dedicated to:
Maintaining a Common Body of Knowledge for Information Security [IS]
Certifying industry professionals and practitioners in an international IS standard
Administering training and certification examinations
Ensuring credentials are maintained, primarily through continuing education
The CISSP Open Study Guides web site is a site dedicated to helping people in achieving their goal of becoming a CISSP or SSCP. It is a vast container of resources that can assist you in mastering the domains of the specific Common Body of Knowledge related to each of the above certifications. This site also offer all of the tools that you need to ensure that you are ready for the exam. Hundreds of people have used this site along with one of the leading CISSP study book and successfully pass the exam.