9/11: The Simple Facts -- Why the official story can't possibly be true by Arthur Naiman

This concise book is an excellent introduction to the glaring anomalies in the official story that, a decade after the attack, most people remain unaware of. It covers a surprising breadth of topics in its 110 pages, and includes a glossary, index, and extensive set of references that are given tinyurl.com addresses for ease of access.