To be able to work in the three-dimensional space that Blender uses, you must be able to change your viewpoint as well as the viewing direction of the scene. While we will describe the 3D Viewport editor, most of the other editors have similar functions. For example, it is possible to pan and zoom in the Image editor.
Some navigation tools require a middle mouse button or numpad. If you don't have one of these, see the Keyboard and Mouse page of the manual to learn how to work around this.