One site I like to recommend for Photoshop learners is Bert Monroy's Pixel Perfect;

http://revision3.com/pixelperfect

And of course Russell Brown has a nice collection of Photoshop tips & techniques too;

http://www.russellbrown.com/tips_tech.html

Besides those, I guess mr.google can recommend tigs of 'the other kind' such as good-tutorials;

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

Illustrator Techniques dot com is the most recent high quality site for your vector needs;

http://www.illustratortechniques.com/

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Hiro