This is just small list of the thousands of websites on the September 11th attacks, but these are some of the ones I like

September 11, 2001 attacks

September 11: Chronology of Terror

Maps of September 11, 2001
You Tube Videos for September 11th
September 11th Evidence to the Contrary
MIT’s Jeff King: WTC Collapse Was Controlled Demolition

New York towers of light

Edit: Had to delete the CNN Video, kept crashing videos