Make sure you have enough kit with you if you end up stuck.
i.e. standard metal shovel, ropes, shackels. hand winch if you can.
For some strange reason, just because you roll up to someone who has got stuck, they naturally think "Ah - Landrover = Rescue" - so help if you can.
Also, be prepared for a cold night i.e. torch, warm fluffy blanket/ sleeping bag, first aid kit - you may be the first on a scene of an accident in this weather.
Gaitors - for your boots - can't recommend them enough in snow.
Try snow near where you live and you recognise / remember features. Watch out for ditches that just get filled in and levelled, or rocks pretending to be snowballs. If in doubt - get out....and have a poke about.
Have fun.