Useful Web, HTML, and Template Sites

Mason	is a powerful Perl-based web site development and delivery engine. With Mason you can embed Perl code in your HTML and construct pages from shared, reusable components. A book has been written on the subject.
mod_perl	is integrated with the Apache web server and helps to improve the performance of web pages.
Apache	is the most popular web server on the internet.
CPAN	provides a huge number of components for enhancing the capabilities of Perl.
PostgreSQL	is an excellent multi-user, transactional database for many data types. A number of online documentation sets are available: PostgreSQL: Introduction and Concepts by Bruce Momjian and The Official Documentation.
CSS	Cascading Style Sheets. Another helpful site.
HTML	An excellent page for HTML syntax and the associated idiosyncracies of the various browsers.
DHTML	One of a number of sites we've found discussing Dynamic HTML for client and server side scripting.