Ok if you want to learn but not study intense like and read the books and stuff, at least not at first, there is a longer but more fun route.

Listen to an actual play podcast. I suggest the first season of the Adventure Zone since the hosts are learning the game as well. They even kinda explain how the game works.

But also tldr for the rules: it's play pretend but sometimes the person describing the scene makes you roll a dice and the number says if you did the thing or not.