how to hack WPA-PSK protected WiFi

Where can I find good wordlists ?

The easiest way is do an Internet search for word lists and dictionaries. Also check out web sites for password cracking tools. Many times they have references to word lists. A few sources follow. Please add comments or additions to this thread: http://forum.aircrack-ng.org/index.php?topic=1373.0.
Remember that valid passwords are 8 to 63 characters in length. The Aircrack-ng Other Tips page has a script to eliminate passwords which are invalid in terms of length.

• OpenWall:
  • ftp://ftp.openwall.com/pub/wordlists/
  • http://www.openwall.com/mirrors/
• ftp://ftp.ox.ac.uk/pub/wordlists/
• http://gdataonline.com/downloads/GDict/
• http://www.theargon.com/achilles/wordlists/
• http://theargon.com/achilles/wordlists/theargonlists/
• ftp://ftp.cerias.purdue.edu/pub/dict/
• http://www.outpost9.com/files/WordLists.html
• http://www.securinfos.info/wordlists_dictionnaires.php
• http://www.vulnerabilityassessment.co.uk/passwords.htm
• http://packetstormsecurity.org/Crackers/wordlists/
• http://www.ai.uga.edu/ftplib/natural-language/moby/
• http://www.insidepro.com/eng/download.shtml
• http://www.word-list.com/
• http://www.cotse.com/tools/wordlists1.htm
• http://www.cotse.com/tools/wordlists2.htm
• http://wordlist.sourceforge.net/

Build your own

Here are a few resources to build your own lists. There are many, many more available if you search the Internet.

• Etemenanki is a shell script that “builds word dictionaries based on remote and local (hyper)text repositories”.
• Associative Word List Generator allows you to build custom lists based on a “root” word.
• Password Generator is a program that generates all the variations of a string of characters based on the length of the string.
• Password Generator is a program that goes through standard and arbitrary permutations of strings.
• BackTrack thread regarding bruteforce dictionary generators
  Thanks to:
  http://aircrack-ng.org/doku.php?id=faq#where_can_i_find_good_wordlists