Here's a book (pdf) in which the author Andrew Johnson uses a lot of material of Dr. Judy Wood (see her youtube presentation).

     - 9-11 - Finding the Truth Judy Wood.compressed.pdf

In a nutshell, this sums it up quite fine. Another free book (pdf) about what really happened.

     - What Really Happened on 9/11?

9/11 Twin Towers Destruction: The Force Behind the Motion

Here is a short 4 part videos in which engineer Jonathan Cole explains away the official report of what the cause was of the collapsing of the towers by showing live experiments. One of the best clips ever seen about this subject.

Here you can find the complete playlist: The Force Behind the Motion

Please let me know what you think of it.