I did the door first. There was nothing there but an exterior wall,
so I started by cutting an opening and framing it in.
I didn't cut all the way through the wall until after I had it framed, because there was no need to make the house cold for that much longer. When I finished the framing and the sheet rock, I cut the wall through the rest of the way and installed the door.
Next came the windows. They were all on one wall of the house in a part that had once been a porch. Here are two of the old ones:
It should have been a simple matter of taking the old windows out of the frames and putting the new ones in, but sometimes in old houses it doesn't work that way.
--Mark