Information panel
Move the pointer around each scene, using the mouse. This will reveal information panels when you are over special areas.
Actions:
To explore you need to move to new scenes by clicking on action areas. Every action has a hint which will appear at the bottom of the screen when your pointer is over it.
(Try it now by moving the pointer over the footprints at the bottom.)
For more information about how to explore, please click on HELP.