For $3, you really can't ask for a better introduction to wireless penetration testing. The book covers setting up Backtrack 5 from your HD to a VM, depending on your preference.
Then it dives right into 3 very brief sections: a few terminal commands, their use, and how they function. You will get to learn the very basics of Reaver, commands like aircrack, airmon, and airodump for wireless handshaking and data capture, and running dictionary attacks. Basically 3 small sections, but perfect for a complete beginner like myself to get a feel for testing in a home environment.