Take it slow and easy. Don't panic when you start to slip and slide because you will, at some point, when you drive on snow or ice. Take your foot off the gas if you feel like you are losing control and brake steadily. Avoid trying to drive through any build-up of snow. Your car will have a mind of its own if you do. If you do get a rental, try to get a 4 wheel drive. That will eliminate 99% of your problems.