The #1 rule for driving in snow (or ice) is that gentle is the way to
go...and stop.

In other words, slow accelerations, and gradual slow downs are the key
to safe driving. If you start spinning your wheels, you are trying to
go too fast. If feathering the clutch (slipping the clutch) won't let
you start up gradually, try starting to move in 2nd gear instead of
1st. Finally, if you get stuck, rock the vehicle forward and back until
you get some momentum going forward. The trick with rocking is to be
able to switch between reverse and a forward gear fast enough so as to
actually apply power at the appropriate moment.