Top-Down View

To select top-down view, click the Top-Down tab at the bottom of the view. Top-down is best for drawing shapes and positioning objects, so you'll want to do most of your editing in this view. However, most editing tasks can be performed in either top-down or perspective view, so feel free to use the one that makes the most sense for what you want to do.

Both top-down and perspective views are linked, so when you adjust one, the other will follow. For example, if you zoom into an object in the top-down view and then switch to perspective, the object will still be visible.

See also:

Perspective View
Panning the View
Zooming the View
Zooming into the Selection
Zooming into a Rectangle