TIP 3 - Constrained Camera View (p.4)

Using Eye Move or the mouse wheel we can zoom in close, select the button and move it where we want it, in the comfort of a nearly orthographic view. Since the magnet tool stuck it to the face, you only have to worry about the x and y position.

Press "view from object" again and we are looking through the button at our "camera" and can easily select it again:

Next...taking this a little further