Hello --
FOR WINDOWS/LINUX USERS:
METHOD #1 (Will Use Windows OS):
1. Watch this video on how to use Commview and AirCrack-NG to crack WEP/WPA/WPA2/WPS passwords on Windows OS:
https://www.youtube.com/watch?v=4S0WMMpXoDo
NOTE: If you cannot locate your wireless adapter on the Backtrack OS, you will need to purchase a WiFi adapter that supports packet monitoring/injection:
http://www.amazon.com/Medialink-150Mbps-Wireless-USB-Adapter/dp/B002RM08RE/
METHOD #2 (Will Use Backtrack 5 OS - MUCH faster than METHOD #1):
1. Download Backtrack 5 R3 from the following site:
http://www.backtrack-linux.org/downloads/
2. Download VMWare Player from the following site:
http://www.vmware.com/products/player/
3. Videos are always better to understand, so watch this video:
http://www.youtube.com/watch?v=Edbl39ki4cA
4. Watch this video on how to use a certain application of Backtrack 5 R3 (Gerix WiFi Cracker) to crack WEP passwords.
https://www.youtube.com/watch?v=e0udwPoUR9k
5. Watch this video on how to use a 3rd-party application "Reaver" to crack WPA/WPA2/WPS passwords:
http://www.youtube.com/watch?v=0Fs_hRuRZ8U
NOTE: If you cannot locate your wireless adapter on the Backtrack OS, you will need to purchase a WiFi adapter that supports packet monitoring/injection:
http://www.amazon.com/Medialink-150Mbps-Wireless-USB-Adapter/dp/B002RM08RE/
FOR MACINTOSH OSX USERS:
1. Download kisMAC from the following site:
http://kismac-ng.org/
2. Watch this video on how to crack WEP passwords with kisMAC:
http://www.youtube.com/watch?v=MZRWWRk50JA
ADDITIONAL INFORMATION:
Here's an excellent resource for WPA/WPA2 word lists:
https://crackstation.net/buy-crackstation-wordlist-password-cracking-dictionary.htm
If you're having difficulties cracking WPA/WPA2 WiFi networks, here is a paid cracking service:
http://skidhacker.com/wpacrack.html
Thanks so much, and if you have ANY questions, feel free to message me.