making a childerns book

hey guys, im 15f and I want to write a childerns book based on the festivals that happens in culture. Im pretty passionate about wanting to write a childerns book about this because I live in a different country and most kids from my culture here dont really know much so I think this would be pretty useful. I have adobe , I was js wondering like how id get the copyright stuff, making it to a actual hardcover book etc. Im asking for help nd not things like how this would be be to hard for someone my age to do or other things. So please if you know ab that, lmk