I own both books and none of them has either a CD or eBook version.
Anyway, after read the whole HFDP book from cover to cover, I highly recommend you to purchase the Head First Design Patterns POSTER which summarizes visually, 16 of the most common design patterns including Adapter, Command, Composite Decorator, Observer, Proxy, State, Singleton, Strategy, and more.
Very good stuff. [ August 07, 2006: Message edited by: Edisandro Bessa ]
"If someone asks you to do something you don't know how to, don't tell I don't know, tell I can learn instead." - Myself