Below is a selection of popular books on gravitational waves that you may find interesting:
This is an excellent introduction to gravitational waves and the search for them.
Ripples on a Cosmic SeaGoogle Books | Amazon.com
This is another excellent introduction to gravitational waves.
- Review on the Astro Guyz blog
- Interview with the author [boingboing] (known as "our sociologist" around LIGO)
This is an insider's look into how we, the scientists, look for gravitational waves and the issues that effect how we work.
(sequel to Gravity's Shadow)Google Books | Amazon.com
This book picks up where Gravity's Shadow left off - and how the first true candidate gravitational-wave detection (which was a blind injection test, called the Equinox Event) was handled.