I'm a noob to this so its a noob question. When I try to extrude a model it does it 2d instead of 3d. Can someone help me? I've tried looking at videos but none show what I want.
When extruding you can press X, Y or Z in order to force axis along which it should extrude.
You can also press E to start extruding, ESC to reset extrusion position (but it still keeps extruded geometry selected), then you can grab any of the direction axes (3 coloured arrows) that will let you move the extrusion in any direction you wish.