Seems as though you have a few issues hidden behind the door cards.
I suggest taking off the door cards and having a look at the rods that lock/unlock your door. It's quite possible that the motors have been replaced and the aftermarket setup are poorly aligned.
Do you still hear a noise once you've turned the key to lock/unlock the door? If not this could suggest that the 25+ year old motors are dead.
In regards to the cabin light not switching on. When you open up your door you'll notice a "door switch". Double check that hasn't broken and if need be, pull it out and check that it's still working.
Also sounds like you have an alignment issue with the drivers side door.
Passenger side window switch sounds like it is on the way out to me.
Where abouts are you located? I have a lot of this stuff for sale actually. I could possibly ship something out to you if you find out what parts you need.
Cheers, Josh.