Function Mouse Keyboard Touch
Move around the scene Double click on ground
Scroll wheel - forward/back
Right click and drag - left/right
W,A,S,D (holding shift to double speed) Double tap on ground
Two finger pinch - forward/back
Two finger drag - left/right
Rotate the camera Left click and drag Arrow keys One finger drag
Elevate camera up/down Right click and drag - up/down Q,E keys - R key resets to default Two finger drag - up/down
Select work/button Left click Centre reticule on item and press return key Single tap

NOTE: The return button is above your head in the deep experience levels.

Full how to guide