The course and in particular the instructor I had was excellent. He used the book, his own slides, and the whiteboard to teach us about the CISSP exam. I took the exam some years ago and didn't pass, took it again right after this class and passed. Simple as that. I really appreciated the drinks, bagels and snacks present on site. Sending the book ahead of time is a great idea
The online classes are very user friendly. If you go through the verification steps then you shouldnt have any trouble the day of class. The classes were informative and the next best thing to being in an actual classroom.