brian d foy is a prolific Perl trainer and writer, and runs The Perl Review to help people use and understand Perl through educational, consulting, code review, and more. He's a frequent speaker at Perl conferences. He's the co-author of Programming Perl, Learning Perl, Intermediate Perl, and Effective Perl Programming, and the author of Mastering Perl. He was been an instructor and author for Stonehenge Consulting Services from 1998 to 2009, a Perl user since he was a physics graduate student, and a die-hard Mac user since he first owned a computer. He founded the first Perl user group, the New York Perl mongers, as well as the Perl advocacy nonprofit Perl mongers, Inc., which helped form more than 200 Perl user groups across the globe. For several years, he maintained the perlfaq portions of the core Perl documentation, and he still maintains several modules on CPAN, and some stand-alone scripts. He's an administrator on PAUSE and helps CPAN authors with issues related to uploading and maintaining their modules.