Photoshop resources

getting to know photoshop
http://blogs.sitepoint.com/getting-started-photoshop/

removing moire patterns from scanned images
http://graphicssoft.about.com/cs/photoshop/ht/apsremovemoire.htm

color cast removal
http://www.zezevideotutorials.com/2010/06/15/different-ways-to-remove-color-cast-in-photoshop/

working with the curves adjustments
http://www.webdesignerdepot.com/2010/06/taking-photoshops-curves-beyond-highlights-and-shadows/

masking
http://blog.echoenduring.com/2010/08/12/getting-to-know-clipping-masks-and-layer-masks-in-photoshop/
http://wegraphics.net/blog/tutorials/photoshop/photoshop-for-beginners-understanding-layer-mask/

blending modes
http://www.myinkblog.com/2009/07/14/an-explanation-of-photoshop-blend-modes/

time saving key combinations and cheats
http://savedelete.com/photoshop-cheat-sheets.html
http://www.smashingmagazine.com/2010/01/20/obscure-adobe-photoshop-time-savers/

digital painting
http://www.ctrlpaint.com
http://chrisoatley.com/digital-painting/
http://www.tutorialmagazine.com/tutorials/view/painting_with_a_tablet_in_photoshop_47
http://issuu.com/julian_design/docs/digital_paiting_techniques_vol_1
http://conceptart.org/forums/forumdisplay.php?f=42
http://www.proko.com

character design
http://www.artbycarloscabrera.com/tutorial.html
http://www.fengzhudesign.com/

miscellaneous
http://www.paintbits.com/digitalart/photoshop-tutorials-you-should-see/

fashion illustration
http://www.lava360.com/inspiration/40-glamorous-fashion-design-illustrations-drawings/

textile design
http://origininc.tripod.com/adobe_photoshop/textile_design.htm

textures
http://designm.ag/resources/2000-absolutely-free-textures/

everything else (for now)
http://slodive.com/photoshop/photoshop-tutorials/