Time-lapse videos of artists creating 3D scenes and models are wonderful tools of expressing methods of modeling quickly. They’re not heavily commented usually but if done well are often easy to follow if one has the basic understanding of the tool in question. You’ll see things you recognize, and learn new techniques too. While longer tutorials are great for in-depth instruction, sometimes it’s nice to just go through a quick time-lapse of the methods themselves.
In this case, an actual digitized skull is being used to create a likeness of a person using Blender 3D. This used to be done with clay layered over actual skulls but this skull was digitally scanned in and the process is done in the computer instead.