Ask a simple question, get 100 different answers. I found the Couchman book somewhere between mildly informative and completely useless. This is strictly from an OCP (I want to pass the exam) point of view.

For me the winning combo was STS and ILT material as well as installing Oracle at home for practice. Caffeine, Rogaine, Prozac and most other sedatives are to be considered optional, alcohol is mandatory however.
MH