A friend here, @stoneronarollercoaster just asked what book got people into reading as a child.
I remember reading Myths and Legends books from quite early on. The story of Pandora box for instance. I remember them when I was about eight or nine. And when I was older I liked the Nancy Drew Mysteries then Agatha Christie stories.
But the main book that got me was when I was about ten I read ‘Old Yeller’ a book that shocked me as it was about a dog that had caught rabies. I remember it was very sad and made me really aware of death. I’ve never read it again. Maybe I should. I’ve been a bibliophile ever since.