I’m Tom Christiansen, author of Programming Perl and Perl Cookbook from O’Reilly. I’m a freelance instructor giving courses in Perl programming, including Unicode and regular expressions. I’ve been using BSD Unix for 30 years now; like your maid, I don’t do Windows.
I’ve undergraduate degrees in Spanish and in Computer Science, and a graduate degree in compsci focusing on operating systems design and in natural language processing. I’ve studied Spanish, French, Italian, Portuguese, Latin, and German, with a smattering of other languages thrown in. For the last few years I’ve been dabbling in computational linguistics.