My library would have all the books from around the world. There would be multiple copies of each book. There would be at least 100 chairs for people to sit and read.
When you came in the door there would be a machine that you could tell it what type of book you wanted and it would take you to that section. If you said the author it would also take you there.
I would have multiple sections for young kids, kids, teens, young adults, adults, and reference. In the kids section there would several computers and plenty of young kids books. In the kids section there would be beginning chapter books and several computers. In the teens section there would be thicker books. In the young adults section there would be a lot of romance novels and long novels. In the adults section there would be thick novels and lots of comedies. In the reference section there would be lots of reference books for all types of information.