1. Introduction to Regular Expressions:
http://msdn.microsoft.com/en-us/library/28hw3sce
2. Mastering Regular Expressions, Second Edition:
http://oreilly.com/catalog/9780596002893/
3. Regular-Expressions:
5. Regular Expressions
6. Regular expression
7. 正则表达式语法
做个快乐的自己。