Blender 2.5 - Extruding Extrude Region & Individual

New Tutorial covering Extruding and Extrusions in Blender 2.5.
All you wanted to know about Extruding in 2.5 Blender.
Extrude Region
Extrude Individual
Extrude tip for angle extrutions
Removing doubles
Vertex Edge Face data in interface.