SSSLLLOOOWWW driving in snow. It is very easy to get your vehicle sliding. Drive much further in advance than you normally do. Give yourself easily 3-4 or more times stopping distance. Don't slam on your brakes, don't make sudden turns, don't try to get up to speed too quickly.
My favorite solution for those conditions is to stop for a meal. Let the DOT guys get a chance to get out on the road and drop some salt or sand. Let the roads get a little better before you drive.
We usually go to Florida in February. A couple of times we have had to use 4WD to get out of our driveway and neighborhood to get down to warmer weather. Its worthwhile to see palm trees, but it can be a little nerve racking!