Granted, I am only studying a few types of pistols to start with as part of the NRA required training, such as single action revolver, dual action revolver, and the semi-automatic pistol. However, there are so many different manufacturers, so I figure it would actually be interesting to see the history of how firearms evolved over time. The video listed below starts out with very primitive armory firearms and goes up until 21st Century.
I especially liked how this video incorporated European and American timelines together to show the competition of who could build the better firearm. History allows us to study and understand the necessity of these industrial changes whether it was for food, land, or for our own protection from others. Today, we obviously have far more advanced firearms due to several military technology advancements.