The Hand Tool is used to move areas of a magnified image around. For instance, Fireworks allows you to zoom in on specific areas of an image. However, when you do that, other areas of the image are no longer visible. By using the Hand Tool, you can grab and shift the image to bring other sections under the magnified area.

The Zoom Tool is used to get closer to or magnify particular areas of the image, useful for precise image editing and manipulation.

You will find that some of your tools will change depending on which Edit Mode you are in. A good example of this is the eraser tool. When you edit in Object Mode the Eraser will switch to a Knife Tool that allows you to cut vector objects with line segments.

In Object Mode the Eraser switches to the Knife Tool.