Download the Free QuickTime Player
To navigate, click and hold the mouse button in the window's frame, then slide the mouse to the right or the left. This will rotate you left or right.
If your mouse pointer, the little arrow, turns into a pointing finger with a globe, then there's a linking spot there to go to another stop of the tour. Let go of the mouse button to stop spinning and click once where the mouse pointer is a pointing finger. You'll move to the next stop in the tour.
Also, if you get lost, at the bottom of the tour window a set of buttons. The "+" and "-" will zoom the frame in and out, and the arrow with the question mark will highlight where there are links in the tour.