What about “The Magic of Reality” ?
It’s the new book from Richard Dawkins, meant as an easy introduction to science. I have not read it myself yet, but it was recommended to me several times and I think it’s aimed at a younger audience in the first place.
I will definitely read it. Maybe you should give it a shot.
I would like to apply for this. Just to see if I have “a good personality ‘fit’ with Bostrom”. I am also seriously interested in this, as I could see myself as a personal assistant for a much smarter person.