Need to replace inside door handle that broke completely off. How do I replace this section?

You will need to remove the cover around the handle they are easy to brake from the inside of the outside cover ring go from the inside with a small screw driver and slide between and pry the cover up it has 4 mounting points top left top bottom right and left.
next pop off the switch from the front slide a screwdriver at the front leading edge and push it towards the back of the door panel and lift gently there is a flange on the rear of it that holds the rear of the assembly down dont pry up on the back lift the front and slide it forward unplug all the wires. remove the two screws inside the door arm rest where you pull the door shut. the cup to close the door. next you need to remove the mirror cover at the front top of the door panel slide a screwdriver pry
straight out. using a door panel clip tool. slide under the panel at the bottom rear corner to find the clip and pry the clip out of the hole. work your way around the door to each clip. sometimes you can pull the panel off with your hands but if you are not experirenced you might break some clips or the door panel be nice to it dont break things. all the way around the sides and the bottom are released then pull away from the door and hold the bottom and lift up and hit the top of the door handle with your hand so the clips will release accross the top. remove the light socket from the rear bottom of the door. place the panel somewhere so you dont scratch it up. now remove the rivet from the handle. I punch the center out then use a sharp chisel to punch it off. you may want to drill the rivet. up to you. then the handle slides forward and you have to disconnect the linkage clips from the handle. install the new handle make sure the lock rod is in the hole that slides the lock. hook up the linkages new slide back in position and rivet then reverse the prosess of removing the handle