A great book for beginning programmers who want to learn Perl. Filled with concrete examples and, yes, by using this book you will be able to write good Perl code on your own in 21 days. But no perlson is an island, and there is no single book that covers Perl completely, so we recommend that you also get Programming Perl, which is better at providing the language specifications, and, in fact, was written by the author of Perl.