http://www.andyart.com/
Andy's Art Attack -"A One Stop Resource for Web Designers". Great site.

http://www.cooltype.com/
Tips 'n tricks, useful resource for graphics designers. Great site.

http://home1.swipnet.se/~w-16916/Photoshopskolan/Index.htm
Photoshopskolan. Great lessons both for beginners and advanced users. In swedish.