I've just received this book (about a 1000 pages) and also have the older Shon Harris All-in-One Exam Guide from way back in 2002 (suspect this may no longer be of value). I'm in my second Information Security Officer job and am a CCNP/CCDP with a Computer Science degree and system administrator background. None of the material seems to be difficult but there's a lot of it. Any suggestion on any additional material to study from and how long?
I've seen the Syngress 11th Hour study guide mentioned a lot here. Is it still relevant? Or maybe the CISSP Official practice tests that are to be released 6/13/18?
https://www.amazon.com/CISSP-Official-ISC-Practice-Tests/dp/1119475929