Get the Whitepaper called Jugando en la red. This tutorial focuses on using Backtrack 4 RC2 to hack wireless. Written in Spanish.
You can download it from the following link: https://packetstormsecurity.com/files/download/103912/hacking-wireless.pdf
Source: https://packetstormsecurity.com/files/103912/Jugando-En-La-Red.html