Useful Visual Art Links

I noticed there wasn't a thread like this in here, so I decided to make one. Most of these are from Deviantart and might require registration.

Anatomy:
Posemaniacs - Rotatable 3D models of different poses. Modeled without skin so you can see the muscle structures.
Torso Landmarks and Volume
Heads (Page 2)

Stock References:
DA Poses - A large collection of categorized reference photos for different poses
STOCK-backgrounds - Exactly what it says on the tin. Tons of stuff here.
FairytaleStock - Stock backgrounds and poses with a fantasy theme

Free Programs:
Inkscape - Vector based program in the same vein as Corel Draw or Adobe Illustrator.
Gimp - Decent alternative to photoshop.
PaintTool SAI(Trial version) - An excellent program for drawing and painting. Technically not a "free" program, but it doesn't automatically stop you from using after the 30 day trial ends. The only thing that changes is you can't save at all, so if you don't mind screencapping your work it's not that big of a deal.
GraphicsGale - A very good pixel art program. There's a free and a paid version, the only difference being able to save and open animated gifs.


Program-Specific Tutorials:
SAI
Photoshop
PaintShop Pro

Misc:
Polycount Wiki - A huge collection of info focusing on game art. Tutorials, advice, references, and articles on multiple topics including animation, textures, environments and more.
Ctrlpaint - Digital painting tutorials.
CG Tutorial for Open Canvas
Free Patterns (Commercial free with credit)
Hair Coloring Tutorial
Eye Coloring Tutorial
General Coloring Tutorial

Feel free to suggest any links you think might be useful.

Dude... no way. Thanks, Aco, this is exactly what I need to kick my muse is her ass and get her drawing! I have ideas but no technique, see...

You're welcome! I know I've had trouble finding stuff like this before, so I figured people might benefit from a list like this.

This is really cool. I've always needed a good pose reference. +1

Yeah, character poses are a thing I have issues with sometimes as well Good info!

Found this tutorial on coloring hair and wanted to share it. *_* Definitely going to try out this method.

Her eye coloring tutorial is also really awesome. Oh my god <3

oh and here's a general coloring tutorial :3

One of my art professors shared this with us: http://subtlepatterns.com/

Good place to find tons of patterns for your game menus and art - commercial free, given credit. ;o