As a newbie in crypto, I will also feel that "what is this?" "How do people earn from this?" because bitcoin it is not introduced by just whoever that you come along the road or your teacher or your parents. It is something that you should really give time to study or understand with. In fact when I was starting my journey in this crypto world this just blew my mind on how this thing work and grew without noting by many.
This is something that you need to dig in, but it is not hard to understand, dig in because for you to lighten up your so much questions, because there will be more questions after a question.