As many doors open as possible. I don't have any blinds or shades on any windows (we live on a hilltop screened by woods from nearest neighbors). As soon as possible the windows are all open. When we have to start running the AC I go sleep on the porch. I hate not hearing what is around me when I sleep. I need complete darkness inside, so I can see the outside. The outside is not connected with my trauma, it is my safe place, my "real" place.