Blender 2.5.x Video Tutorials #7 by Neal Hirsig file

Lighting: Point Lamp, Sun Lamp, Sun Lamp - Sky and Atmosphere, Hemi Lamp, Area Lamp, Spot Lamp, Ambient Occlusion, World Editor: Background Sky, Background Image, Stars, Mist, Render Slots. All credit for this set of video tutorials belongs to Neal Hirsig.