Here are some great Photoshop resource sites for renders, brushes, stock images, c4d’s and vectors.

Free graphic request’s: http://www.graphix-inc.net/forum/requests.html
Free graphic request’s: http://gfxfactor.com/forum/210266/
Renders: http://www.planetrenders.net/
Photoshop Tutorials: http://www.deviantart.com
Stocks: http://wallpaperstock.net/
Online .Gif Editor: http://www.online-image-editor.com/index.cfm
Free Photoshop Brushes: http://www.brusheezy.com/
Free Vectors: http://www.vecteezy.com/
Photoshop Text Effects: http://www.designvitality.com/blog/2007/09/photoshop-text-effect-tutorial/
Youtube Photoshop Video Tutorials: Youtube
Rule of Thirds, Visual Center, Grids: http://desktoppub.about.com
Free .Psd’s: http://www.freepsd.com/
Free Brushes: http://getbrushes.com/