"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 this day.
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.
This was my first real "programming" book, and my first O'Reilly animal book and it changed the course of my life in a real and tangible sense. I read it cover to cover and did all off the exercises, and then moved right on to Learning Perl. To this day, I watch people struggle with regexes or dismiss them, but I'm done finding what they were looking for before they can finish complaining.
The appeal of Perl when I chose my first "real" programming language, after using Javascript for browser compatibility hacks, was that it was designed by a linguist with regular expressions built into the language as first class citizens. My flatmate at the time, who worked for a bank, was trying to persuade me that Java was the future but I took one look at Java's regex implementation, where you have to escape regex metacharacters, and nearly threw up. Java 17 still hasn't fixed this even after adding raw string literals.
