I have several Regular Expressions books; most of them are from O’reilly.
However the others are more focused on various unix/c environments.
You can tell that this was not written in a laboratory or an ivory tower and the recipes are not just practical but the ones you will be challenged within the real world.
Do not tell anyone but I have fun reading this book in advance of a change to see the possibilities be for the questions arise.
While you are being mesmerized by regular expressions you are also being exposed to different environments; some you will be familiar with and others will make you say where have I been? To name a few various editors, the different languages themselves if you have not had a chance to experiment, each chapter tattle is a different concept or valid reason to use regular expressions.