Okay, I have the Encyclopedia and the audio CDs. How do I combine them to study? Do I pick an exam area (say Group Counseling) and then read the book chapter on this topic and listen to the CD related to this area of study?

There is no perfect answer here. Dr. Rosenthal has corresponded with literally thousands of counselors and some do just what you have proposed, while others, go through his entire book and then listen to the CDs. Still others, listen to all the CDs and then read the book. It is a totally personal thing. Do what seems to work best for you and your schedule. The CDs are ideal for use in your car, SUV, truck, or van.