/diy/ - Do It Yourself

I literally know nothing about tools, what they do, what they’re called, what actually exists, how to fix things, the names of components, what components do, how to even begin a task because I don’t know what exists or where to start etc.

How do you guys know all of this stuff? How do you know what a Sawzall is or what all the things in a car are called or what they do? How do you know the difference between a bolt and a screw, and what you use each for, or what those numbers in front of their names mean? Where did you learn all of this stuff?