Looking for videos/documentaries about guns.

I’m looking for good recommendations of videos or documentaries about guns. Where they explain what they are mainly used for, where they came from and how they work. I’m not that knowing of guns, but I really want to know more since both me and my dad loves them. (My dad legally owns some firearms, which is really hard to get in my country depending on who you are.) And I just really want to know more, so I can share fun facts and stuff with my dad when we do stuff together or watch movies.

(I apologize for bad English/grammar and if this is the wrong place to post this. Please recommend where else I should post this if it’s wrong. Thanks.)