I am not a Julia developer (yet?), since I did not yet open a PR on the main repository.
But as for point 1, you can find a list of books at Books. I am sure if you pay someone to write a book.
As for point 2, this was discussed in your old thread at Julia online compiler in November, where (if I remember correctly) the main conclusions were that both financing and maintenance/security are major aspects someone first has to solve.