"Mastering Regular Expressions" by Jeffrey Friedl. While reading Dreamweaver 3 Bible I became intrigued by the Find And Replace options which included regular expressions. At the end of the chapter was a reference to Friel's classic and I found a copy in a local London library. That led me to "Programming Perl" by Larry Wall and the beginning of my career as a developer. The O'Reilly Perl collection is unsurpassed to…
When I was a kid I wanted to make an IRC chatbot. I didn't know much, but I read online you could use regular expressions to match text commands. I felt like I needed a book, saved up money, and got my mom to drive me to the next town. Our little library didn't have any computer books. I remember her paging through and asking if I really wanted this "technical manual".
Mastering Regular Expressions was the start to my programming career as well. Having references to a bunch of other languages spurred my curiosity to learn them. I eventually bought some of the O'Reilly Perl books as well.