Here is a collection of links that I visit often and find useful for the Designer/Programmer/Graphic Artist:

Digital Art:

• CGSociety - Society of Digital Artists - a must-visit community for digital artists
• ConceptArt - community of digital and traditional artists with specialties in illustrating
• The Gnomon Workshop - Professional Training DVDs
• Adobe Magazine for Creative Professionals - free magazine from adobe in PDF format
• Image * After - free images you can legally use in both personal and commercial projects
• Morgue File - more free images you can legally use in both personal and commercial projects
• Wikipedia: Public Domain Image Resources -great list of sites with freely available images
• Imagine FX - UK-based magazine on digital art, occasionally has free articles and resources
• PSDTuts - tutorials for photoshop, sister site of Freelance Switch
• Illustrator Techniques Forum - afairly recent forum to discuss everything Illustrator

3D Graphics:

• Area - Autodesk community site
• Pixologic - creators of ZBrush
• ZBrushCentral- ZBrush community site

Freelancing:

• Freelance Switch - great resource/community for freelancers
• Scriptlance - bid on freelance job

Web Design:

• XHTML Validation - make sure your XHTML is solid
• CSS Validation - check your CSS while you’re at it!
• CSS Cheatsheet - excellent reference if you have trouble remembering all that CSS
• CSS, Accessibility, and Standards Links - links to various CSS resources
• Kuler - Adobe’s Flash-based color picker

Web Programming:

• W3 Schools - excellent resource for learning a variety of web-based programming languages
• PHP - a server side scripting language
• PHP Freaks - good PHP tutorials, news, and forums
• ASP.NET - another server side scripting language
• Dev Shed - great tutorials and forums for programmers
• SitePoint - good articles on a variety of web topics

Upcoming Technologies:

• Microsoft Silverlight - browser based graphics similar to Flash
• Adobe Flex - allows you to developed Rich Internet Applications based on Flash
• Adobe Spry - framework for Ajax that lets you work with XML, JSON, or HTML data as well as providing interesting transition effects