Here is a Free WiFi Hacking PDF that will teach you all about how the
802.11 protocol works as well as how to hack WEP, WPA, WPA2 and WPS as
well as how to protect against it.
Disclaimer
1. The following discussion is for informational and education purpose only.
2 – Hacking into private network without the written permission from the owner is Illegal and strictly forbidden.
3 – Misused could result in breaking the law so use it at your own risk.