Adobe.com : first resource. Articles, tutorials, video, forum. All in one. Video tutorial
Adobe Tv: project tv
Adobe forum: support for help and resolutions of problems
Exchange: you can find extensions, actions, scripts, templates and more.
Tutorial: step and trick on Designer centre.
http://www.pstut.com/: tutorials how to use Photoshop.
http://www.outbackphoto.com/content/technique.html: Photo Technique.
Free plugin-in to search over 20000 premium and user generated 3D models and import them inside of Photoshop
PhotoTools 2.5 Free is completely free but on the Adobe’s page is trial. Ok for download.
Action: free. Allow you to sharpen images, apply textures, create vignettes, produce gallery frames and more.
Reduction: Boundary Noise Reduction. Completely free.
http://thepluginsite.com/resources/freeps.htm: list of plugin. You must enter your email address for download plugin.
http://www.getfreeebooks.com/?p=768: tutorial, link, resource on e-book FREE! Very nice! 🙂 *****
http://photoshopetiquette.com/: consigli tra photoshop e web-designer