crappy little card with the code on it.
That's all I got with it too. It has the controls on the other side.
I found the controls useful. You don't want to be being attacked by a horde of zombies and instead of shoot them, you turn your flashlight on. So really, no need for a book.
Anyway guys, I'm having a little trouble. I bought a good headset, was ready to go, but when I tried to use it on L4D it wouldn't work. Do you hold down t to talk or press it to talk and press it again when you are done?