Use the Mouse in the 3D - Window 

Wheel                        = Zoom In / Out
Left Mouse Button            = Rotate around y-Achsis and x-Achsis
Left + Right Mouse Button    = Rotate around y-Achsis and z-Achsis
Right Mouse Button           = Move in x and z direction
Right Mouse Button and Wheel = Move in y direction
Middle Mouse Button          = Reset Rotation

ASDW, or Arrows              = Navigation x-, z-direction
E,C                          = Navigation y-direction
Q,R                          = Rotate Koordinate (before set)
Return                       = Place Aktive Tile at cursor pos
Backspace                    = Del Tile under cursor
