The final way to move within the scene is panning, moving your view up and down and right and left. It helps you look at different parts of the scene. The steps are as follows:
Move the cursor over the 3D View, then press the Shift key. Press the MMB and move the mouse up and down.
Move the cursor over the 3D View, then push the Shift key. Press the MMB and move the mouse left and right.
Move the cursor over the 3D View, then push the Shift key. Press the MMB and move the mouse around as you like.
Pressing the Shift key and holding down MMB while you move the cursor in the 3D View pans the 3D View. Panning is moving your viewpoint horizontally or vertically. Very good; now you know how to navigate in the 3D View.