Unraveling Regular Expressions, Step-by-Step
Michael is a funny, patient and pithy author.
The book breaks down the basics of Regular Expressions into its components and then walks through explaining them in examples, line by painstaking line.
Any book that uses Coleridge to teach me Regular Expressions is awesome, so I’m biased :)
Definitely worth a read if you are brand new to the powerful world of RegEx.