The Perks of Being a Wallflower is my favorite all time book.

Ready Player One is always a good read and I really need to get Ready Player Two

and Gil's All Fright Diner which has a very hitchhikers-guide feel to it only instead of sci-fi it's supernatural.

And of course all the usuals, HP, Hitchhikers Guide, any of Stephen King's short stories (and most of his novels).