Here's just a sample of the many internet resources I have bookmarked. All these links are good at the time of this posting.

Curves and Levels

http://ronbigelow.com/articles/articles.htm
http://www.zuberphotographics.com/

Zone Mapper

http://www.lightcrafts.com/help/Tool-ZoneMapper.html

Tutorials

http://good-tutorials.com/
http://www.photoshopcafe.com/

Colour to B&W Conversion

http://www.russellbrown.com/tips_tech.html
http://www.creativepro.com/story/feature/23655.html
http://www.northlight-images.co.uk/bwfromcol.html
http://www.riecks.com/forphotogs/rgb_grayscale.html

Plug-Ins

http://www.freephotoshop.com/
http://www.asf.com/


What are some of yours?

Regards, Art.

Art,
Excellent set of links. It would be veryu cool iif everyone would add their favorites as well.

Forgot the most important source for plug-ins: http://www.adobe.com/products/plugins/photoshop/

Regards, Art.

Photo Editing Software besides Photoshop:

Corel - http://www.corel.com/
GIMP - http://www.gimp.org/
Google Picasa - http://picasa.google.com/
Serif - http://www.serif.com/index.asp
Apple Aperture - http://www.apple.com/aperture/
MS Digital Image Suite - http://www.microsoft.com/products/imaging/default.mspx
Ulead PhotoImpact - http://www.ulead.com/pi/runme.htm
Roxio - http://www.roxio.com/enu/default.html

Regards, Art.

Now this is a very helpful thread.
Thanks Art

The GIMP - http://www.gimpguru.org/Tutorials/

There are also some links inside individual tutorials to equivalent Photoshop tutorials for those who might want to note the difference in methods / approaches / commands.

Lee

Linux media blog, with lots of info on graphics/photo editors, settings, color management, etc.

http://my.opera.com/area42/blog/