For most of us, our first experiences of winter camping will be in a tent without any form of heating. This is one form of “Cold Camping” but it can also involve the use of a simple tarp or the building of various types of snow shelters or even natural shelters as well if practical.
Probably the most critical thing to get right in this situation is your sleeping kit.
There are some excellent sleeping bags on the market and some even offer a single bag solution that is able to insulate your stationary body at remarkably low temperatures.
The most important thing to understand about sleeping bags is that they are not warm.
All a sleeping bag can do is stop you from losing the heat that your body produces and it does that by insulating you from the cold.
Personally I favour a modular approach, much the same as the layering system used in clothing.