This was easy. I had watched several different videos before I started and the results were very good. Here are a few tricks I picked up:
1. Have a lot of light to see the small parts
2. After removing the back cover, remove the Phillips screw that holds the battery connector and pay attention to the orientation of the hold down clip on the battery connector.
3. The old battery is glued to the back of the phone housing so use the pry bar/spudger to pry up on the battery on the side away from the connector and the top and bottom. Then pull up on the plastic tab to lift the battery up and out.
4. When you place the new battery in position hold the battery in your right hand above the phone case and clip in the battery connector in first with the battery up on an angle to the right side. When the battery is clipped in place, accordion the flex connector and place the battery in where it goes.
This was easy.