Blender Artists Forums BlenderArtists forum
This is the 'official' Blender 3D user forum.  Ask your questions here.

Categories include:
Modeling.  Texturing.  Games.  Rigging.  Rendering.  Animation.  Works in Progress.  Finished works.  Etc.
Game Blender forum GameBlender forum

Categories include:
Game modeling.  Design.  Python.  Logic bricks.  Works in progress.  Finished games.   Networked games.  Bullet Physics.
BlenderNewbies forum BlenderNewbies™ forum

Categories include:
General Help.  Quick Tips and Tricks.  Works in Progress.  Share Your General Blender Renders.  BlenderNewbies Tutorials Discussions and Results.
Blender Underground forum Blender Underground forum

Categories include:
General Questions and Help.  Tutorials, Hints and Tips.  Blender Underground Tutorial Feedback.  Blender Wish List.  Comments about the Latest Blender Builds.