When writing the beginning of a personal narrative, it is important to

describe the lesson learned.
build the intensity of the story.
explain the significance of the experience.
introduce key people, places, and events.

walter refusing lindner's offer.

who is marty in this situation?

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.