Normal Mapping In Blender

Normal Mapping In Blender:

http://www.blendercookie.com/2010/08/30/retopology-and-normal/

Free GPU Renderer

Free GPU Renderer:

http://www.blendernation.com/2011/06/24/machstudio-pro-2-free-gpu-realtime-animation-and-rendering-system/

Free Unbaised:

http://www.blendernation.com/2011/07/20/evermotion-released-free-unbiased-renderer-nox/

Texture Paint

Blender LSystems Trees

Blender LSystems Trees:
http://lsystem.liquidweb.co.nz/Examples/tabid/122/Default.aspx

Physically Based Lighting In Blender

Intro to Indirect Lighting from Benjamin Bailey on Vimeo.

Indirect Lighting in Blender 2.5 Alpha 2 from Benjamin Bailey on Vimeo.

Blender Materials

Blender Materials: Values for different types of surfaces.http://matrep.parastudios.de/index.php
http://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro/Every_Material_Known_to_Man

Blender Cycles

Blender Cycles:
http://www.blendercycles.com