This new book in the Deitels'How to Program series is a comprehensive guide to programming with Perl. It emphasizes the use of the Common Gateway Interface (CGI) with Perl to create powerful dynamic Web content for e-commerce applications. The book begins with a clear and careful introduction to the concepts of structured programming at a level suitable for beginners to programming, and proceeds through advanced topics such as references and complex data structures. Important topics in Perl such as regular expressions (Chapter 8) and string manipulation (Chapter 9) receive a detailed treatment. The authors address important and topical issues such as object-oriented programming (Chapter 14), the Perl database interface (DBI) (Chapter 15), graphics (Chapter 21) and security (Chapter 19). Also included is a significant treatment of XML (Chapter 22) and the Python programming language. There is a complete chapter on Web accessibility that addresses programming and technologies relevant to accessibility for people with disabilities. Appendices include detailed instructions for installation of Perl and server configuration for CGI scripts. Perl How to Program is geared toward both Unix/Linux and Windows users.