Originally Posted by Cheezetwinkle

the way i think of it is, in the hall or room you start out in, pretend you are in there yourself and looking towards the only direction that you can get out. now, simply follow the wall that is to the left of you

so always go to the left of which ever way the room or hall points to.
the red arrow being the direction that the room points, green arrow being the left of the red arrow

i hope this helps