I also have a general question. This is my first Diablo game and it’s 3. I am wondering what you do after you beat the campaign. Is it just running dungeons with people and such?
Yes. Once you get to 70 (on your first character; with 'alts' (further characters, after you've heard your 'main'), a new option called Adventure Mode opens up. There are several activities for endgame: bounties and nephalem rifts (always available, and always at the difficulty level you've set when opening that 'instance' (the game you're in an that moment), and greater rifts (which have their own mechanic for pushing higher and higher, along with their own unique reward system (blood shards that can be gambled at Kadala, and powerful legendary gems with their own affixes).
There are a lot of resources available online to guide you towards and during endgame. You might want to riffle through the YouTube channels of, say, Rhykker, Raxxanterax, Rob2826, or one of their colleagues. I personally like Raxx's content a lot.
EDIT: 100 points extra for your username, LOL. Even in-game, hahaha!
