I need to see how the door latch works for 1996 F250 drivers side door to try to open it.

I have found many videos on YouTube centered on topics like this.

Also there are pay videos you can purchase.. (I spent $3 on one for a newer Trail Blazer.. it was exactly what I needed,to SEE the process being done.well worth the money)

Otherwise,seek a Chilton's repair guide at the local Autozone or big auto stores, or the Library,they have almost all the repair guides there,and you can make copies of the parts you want.(Library only,our parts stores don't have machines for public use.. )