Quote: "is there any tutorials on using the extrude tool for beginners in milkshape 3D? almost all of what i want to build i want both sides of the faces textured. also i used one tutorial on texturing each face different but every time i textured a single face it also textured the adjacent face. i went through the tutorial many times and that is how it always ended up."
Right, well, only one side will be visible. This is because if you turn off culling in DarkBASIC, the reverse side will automatically mirror in texture what the other side has.
If you want to texture the interior differently, you'll need to actually duplicate the model (edit/select all > edit/duplicate) then go to either face or vertex (can't remember) > reverse vertex order.
It'll double your poly count of course.
As for texturing each face, do it like a man, properly! There's guides on the 3d board for texturing.
Hurray for teh logd!