Whereas I initially thought that this verbose book could teach you a lot, this is not true. The author has compiled NT related information which would not stand up when (for instance) used as course material.
Two examples: 1. On cumalative file access permissions (page 205) the auther says that permissions are added up but forgets to mention that a DENY preceeds this. He also includes a huge list of what can be done with which permission but forgets to mention that COPY is possible with READ rights only. 2. On shares: The author describes that NT share level rights and File level rights intertwine, he claims its may be confusing at first and then fails to list the sequence of checks NT performs to know whether you have access: (logon->)share security->folder security->file security. In other words, you do not know how access controls on shares work from this book!
To finalise: a lot of info, very much scattered around, something to pick some info from, show off with maybe, but not really for reading :-(. The problem examples are just a few from the bunch. Clearly a rush to the NT security quick bucks job, not even fun reading, a pitty. Have a look at (NCSA-McGraw-Hill) Rutstein's book first (ISBN 0070578338), at least this author knows his stuff and sticks to facts.