These are some tools that could get you started with regex. They also include testers for your regex

RegExr Desktop

Free RegEx Tool for MacOSX, Windows, and Linux

RegExr Desktop is a tool for learning, editing, and testing regular expressions

http://gskinner.com/RegExr/desktop/

 

For Testing your regexes

http://regexpal.com/

http://regexhero.net/tester/

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