How to join metaverse?

So, I'm curious, how exactly does one go about joining the metaverse? Is it as simple as downloading an app or is there more to it? I've heard it's a virtual world where people can interact and even own virtual property, but I'm not sure how to get started. Can you walk me through the process of joining the metaverse, from start to finish? And what kind of platforms or tools should I be looking into to fully immerse myself in this new digital world?