Georeferencing Drone Imagery in QGIS

As wonderful as it is to create a drone image mosaic, they aren't always located in the correct position. Not to say that other datasets are any better! Here I show you the process of image to image georeferencing. It's not perfect, but as my son says - you get what you get, and you don't get upset! I also show you how to incorporate Google Satellite data into QGIS, so if you don't need to do that, just skip ahead to 3:07 :)
For reference, here are the URLs for linking through to Google data Google Maps: https://mt1.google.com/vt/lyrs=r&x={x}&y={y}&z={z}
Google Satellite: http://www.google.cn/maps/vt?lyrs=s@1...{x}&y={y}&z={z}
Google Satellite Hybrid: https://mt1.google.com/vt/lyrs=y&x={x}&y={y}&z={z}
Google Terrain: https://mt1.google.com/vt/lyrs=t&x={x}&y={y}&z={z}
Google Roads: https://mt1.google.com/vt/lyrs=h&x={x}&y={y}&z={z}