Linklist

Tutorials

3DTotal.com Free tutorials
FZD - Design Cinema
ImagineFx Tutorial articles
LayerPaint.com Free tutorials
Ctrl+Paint.com 
I-draw-girls.com tutorials by Xia taptara & Art tips on I-draw-girls.com
Marc Brunet Workshops video tutorials

Reference

Fashion Model Directory- criteria search

Reddit SFWP image gallery with categories

CGtextures.com Free textures

Anatomy4Sculptors.com Anatomy references
PoseManiacs.com Poses & Anatomy references  
FreeTextures.3dtotal.com textures

Layerpaint.com Free brushes

Lost & Taken Textures

Mayang Textures

Enviroment Textures

Texture King

CG-Skies

For your portfolio

ConceptCritique.com personalised, professional critique & tutoring
Business.tutsplus.com Build a killer online portfolio in 9 easy steps 
SmashingMagazine.com 10 steps to the perfect portfolio site