Regular Expression Links

http://immike.net/blog/2007/04/06/the-absolute-bare-minimum-every-programmer-should-know-about-regular-expressions/

http://www.linuxforums.org/applications/demystifying_regular_expressions.html

http://www.regular-expressions.info/quickstart.html

http://gnosis.cx/publish/programming/regular_expressions.html

http://www.zytrax.com/tech/web/regex.htm

http://www.addedbytes.com/cheat-sheets/regular-expressions-cheat-sheet/

http://www.visibone.com/regular-expressions/

http://gskinner.com/RegExr/

http://www.weitz.de/regex-coach/

http://ryanswanson.com/regexp/#start

http://www.regexbuddy.com/