Once you are done smiling, you can read this Scientific American article, which provides a good intro to parallel universes. Then read this book (A User’s Guide to the Universe). Next get a degree in math/physics/astronomy and eventually a doctorate in cosmology/astrophysics. Subsequently, clearly explain the details of how scientists think the universe works to humanity. Somewhere along the way figure out why it matters. Finally, start smiling again.
I’ve been watching the first season of the show and it is funny, with lots of deadpan humor. The characters are pretty fleshed out and have great voices. The animation is different in a good way (what adjective replaces that statement?) and the crudeness adds a level of visual interest.