Hi, I am new to this and I wonder how this site works? In the end, the idea of creating this page seems very good to me and if someone answers me, thank you very much.

You can read the About page for more information, but basically you just talk about stuff X'D And do missions too, I guess. (There are things that people suggest we do to help the world become a better place or something like that. You don't have to do the missions if you don't want to though)
It's very easy once you get used to it. If you still have trouble understanding how things work, how about you stay for a while and observe how others use the site?