Easy buddy.
Take a flat head and look behind the door release handle and behind the handle to hold onto the door and you will see a piece that is removable. Remove them with the flat head.
Pull up on the door lock on the door panel, you will see a small square piece. Pry this out and the lock will slide up.
If working on front door, remove the triangle plastic piece on the front/top of the panel.
Remove the bolts that were behind the removable panels behind the handles.
Take your flathead and starting from the bottom of the door, pry the door away and it will release the door from the snap in clips
Then lift the door up
Reach behind the door and disconnect the wiring plugs
Remove panel and youre done
To reinstall:
Push the bottom of the door into the alignment holes so that the bottom may rest in the door
Connect the wiring plugs (they only fit in one of the connections so do not worry about hooking the wrong one into the wrong spot)
Lift the door up and onto the window gasket so that it grabs onto and will sit against the door
Firmly hit the door along the sides and bottom so that the snap in clips get pushed in
Reinstall the handle bolts
Reinstall the triangle plastic trim piece if working on front door
Reinstall lock by removing the square piece and then pushing the lock down and then pushing the square piece in
Reinstall the handle removable pieces
Boom youre done. Hope this helps ya out