Here are just some of the resource sites out there for your art:
All:
deviantART: where ART meets application!
Brushes:
Free Photoshop Brushes at Brusheezy!
QBrushes - Quality Brushes for Photoshop
Photoshop Brushes
PS Brushes.net - Photoshop Brushes, Your Number one source for Photoshop Brushes
Fonts:
https://www.dafon*****m/
1001 Free Fonts - Download Free Fonts - Windows and Macintosh Fonts
Free Fonts - Free Font Download - Cool Fonts
Fonts
Stocks:
stock.xchng - the leading free stock photography site
Stockvault.net | Free Stock Photos and Free Images
Fringefx.net
Renders:
www.planetrenders.net/
www.premiumrenders.com/
Anime renders this is where your dreams cross-over
GameRenders - Your Source For Free Gaming Renders
Textures:
www.cgtextures.com/
www.textureking.com/
Free Textures from TextureZ.com
and ofc if you are still stuck: Google (Thanks DBB)