Helpful Links

Tutorials

w3Schools
A large developer site containing free tutorials and quizzes. It's references range from HTML to ADO to Flash. It is a great place for those starting out and those needing a refresher.
SQL Course
SQLCourse.com offers a free tutorial in SQL(structured query language) that runs entirely online. Here you can learn and practise writting SQL statements without downloading anything or buying expensive software. This site is also a great source for information about databases and programming technology.
regular-expressions.info
Devoted entirely to regular expressions, this site explains the symbols and why they do not always do what you expect. Also offers a simple reference page.

References

DevGuru
A great reference for scripting. A helpful indicator shows which scripts work for IE or Navigator. There are also many useful articles available by search.
HTML goodies
A useful site with lots of information on HTML and beyond.
browser safe colors
This page lists old browser safe colors plus a few others.
ALA
An online magazine with lots of helpful articles for web developers.

Forums

WebDeveloper.com
A place for discussing the building of web pages and related technologies.
SitePoint Forums
This is an excellent site for the discussion of CSS.
TIOBE Software
Shows trends in programming language popularity via search engines.