what i do find interesting are the first-person accounts. the stories about the people. those who died, and those who were just... there. that feels more real and meaningful to me.
first up, a book designer whose house blog i follow. the last line of her post is the best.
second, a NY Magazine story about the NYFD chaplain who was the first official casualty of the attacks. i imagine NYC is a lesser city without him.
and last, a first-person account of a woman living in the Lower East Side at the time who found some practical ways to help. hers is told in 3 parts:
(aside from 9/11, the Fosterhood blog is incredible. it's the story of a 30-ish, hipster-ish woman who decides to become a single foster parent in NYC. i recommend starting at the very beginning and reading forward.)