We winterized last year, but this year we're going to have to get pretty drastic. The good news is that starting about now, we won't have to use the A/C as much because the nights start cooling off; so, we'll get some relief between the cooling and the heating. What we'll do:
-Visqueen & caulk all the windows except 1 in each room (for emergencies, we can't really do them all. Fire hazard).
-Put "snakes" at the edge of all of the doors to keep in heat, and keep out drafts.
-Shut the vent in the back room, and heat it only for guests.
-Shut off the back door with a blanket, so the back hallway isn't heated.
-Consider how to apply heavy curtains to at least some of the side windows. This isn't as easy as it sounds, because that wall is brick with a thin veneer of plaster. You can't really anchor things to it very easily without brick anchors, which can hurt the plaster. But, I am going to give it some thought.
We're on the third floor, so we do have the advantage of having all the rising heat :-)
"This isn't life in the fast lane, it's life in oncomming traffic." -Terry Pratchett