Call of Cthulhu: Dark Corners of the Earth

Towards the end of the devil's reef level you come to a collapsed rope bridge. I am supposed to use a pulley to lower myself halfway down, right? I don't mean to be dull but where exactley is this pulley. All I see is a rope and when I push action all I get is...

what is the safe combination??

how do you input the numbers on the safe i dont know if you have to turn it the amount of times of the number or turn it to that number.

P.S
very confused about iy

how do i get out of the warehouse area. I cant get out!!!