Perl
These are just starting points, the perl community is wide and active.

Perl Mongers, one of the best starting points for perl browsing

Use Perl, on-going perl discussion and advocacy

The Perl Monastery An active community of perl people. Make friends, get to know people. Actually, you can learn a lot just by hanging out here and reading the discussions. Create an id and become a member, join the group. Monks are generally tolerant of even naive questions, as long as you pay the dues of doing your own investigation. The pages you are reading now are hosted on a machine generously contributed by a fellow monk, jcwren.

Columns by Randal Schwartz Merlyn in the monastery, Randal's columns are a very good way to gain an appreciation of the possibilities of perl and elegant ways to implement solutions in the language. He has written columns for three magazines, this link points to the columns submitted to Linux Magazine, but the other columns can be reached by clicking the links immediately above the list of articles. A very good way to deepen your understanding of perl. Read them, puzzle through them. You'll be picking stuff up without realizing it.


Database Design
Tutorials
Geekgirls
Web Monkey

Browser-based programming
HTML
HTML Quick Reference from the University of Kansas
Nice HTML forms tutorial at creativeprogrammers.com

CGI
CGI Overview from Champaign-Urbana, where Mosaic came from.

Document Object Model
DOM Overview from About.com
W3C DOM specification

Javascript
Javascript Guide at Netscape, frequently mentioned as the definitive javascript reference
Javascript tutorial
Javascript primer
(there are many others ... the links on the pages above can serve as a starting point, or google "javascript tutorial")

HTML Editors
Some free, some free with better versions for modest cost

CoffeeCup Editor: I've not used it, but it is very well reviewed.
Arachnophilia: Freeware. I use the 4.0 version, have not tried the java version.
WebFoot: Freeware for personal use. This one looks pretty cool.

Nice comparison matrix of html editors


Additionally, most programmer's editors have some degree of support for creating and editing html, perhaps without some of the html-specific bells and whistles, but very effective nonetheless. Personally, I've found myself gravitating toward using one editor for html and another for general purpose programming such as the perl scripts included here, largely because editors specifically oriented toward html ease the creation of web pages while general purpose editors that are more oriented toward programming have similar tools focussed on the kinds of things you do when you write programs. My general editor of choice is UltraEdit, a shareware editor that costs approximately $30 USD to register. Ultraedit has a wide range of features that can be of substantial benefit when organizing larger projects, and a great many little bells and whistles that make the practical task of programming much easier. I've recently run into a freeware editor, the Crimson Editor, that I like almost as well for smaller tasks. The trade-off between shareware and freeware lies in support. The author of UltraEdit is continuously upgrading his product, adding support for emerging technologies, and is responsive to support-oriented e-mails. Freeware packages may be enhanced as well, but the developers are not generally making their living from the package so timely support is problematic. "Orphaned" freeware products are common, which is not to say that they aren't still useful. A hammer made by a company that no longer exists is still a hammer. Personally, if you find yourself becoming involved with programming or creating html documents, and you're doing it on a "regular person's" budget, I'd suggest finding a shareware package in a price range you can afford. In the long run you'll be happier with it.

Regardless, there are a large number of these available, some freeware, some ad-supported, and others shareware. This link will take you to the tucows page listing html editors. Just pick one you like. Of course, if it is shareware, and you continue to use it, you are morally obligated to pay for it.