How do you use your heating in the winter months?

This question has two parts. I find heating interesting because it is a very new concept to me, having lived in tropical areas most of my life.

Which type of heating do you have? Ours are radiators which attach to the wall. I find they do make the air quite dry?

Also, how often do you have your heating on? All day if you are at home, or just use it briefly then switch it off?

I have been told that short timed blasts are more economical than all day central heating turned down low.

Do you monitor your heating bill? We have a gadget that tells us when we are over budget. Which is pretty much every day. Do you try and save money by not having the heating on? If so, how do you manage to do that?
You could also mention, your lowest temperatures in your area in winter.