You can start by writing a book. Every two cents you need to research because most writer are…

You will never become the competition on the textbook, those are PHD. You do it for the hunger games reason or you do it for the money reasons? Nick publishing his book, there are the physical copy he shows you, there is no money in it but he works behind with the editor - I think a proof reading. Can you write English? A real text to text, formatting MS words processor makes a PDF sent for someone read?

There is a way to write the textbook on the education side.

It’s just you if writing a what book, a try even be metaphysics about it …you have a connection ? I am assure you we are not connected and I am not in your library working.