you can have a look at the default list of keyboard shortcuts by going
Rhinoceros-> Commands-> Customize-> Keyboard Shortcuts
you can see the default macros by going
Rhinoceros-> Preferences-> Aliases
that said, i suspect you’re looking for navigation controls and their modifier keys?
basically-
Zoom = Middle Mouse Wheel
Rotate = Right Mouse Button (orbit in sketchup lingo)
Pan = shift + RMB
trackpads work a little different too.
some of this stuff is already covered in the Rhino for Mac user guide:
http://discourse.mcneel.com/t/users-guide-with-tutorials/7602
other camera control options can be found here… these all work on mac… use command instead of ctrl… option instead of alt
http://wiki.mcneel.com/rhino/cameramanipulation