An excellent section about veterans and TBI: http://www.neuroskills.com/veterans/index.shtml

Brain Trauma Foundation
http://www.braintrauma.org

North American Brain Injury Society
http://www.nabis.org

Reach for the Skye (under construction)
http://www.reachfortheskye.org

Anne McGinnis Breen's Brain Tumor Blog
http://gbyay.blogspot.com

Books
These are only a few of the many books available about brain injury. You can search Amazon.com to find them and many others.
Living with Brain Injury: A Guide for Families by Richard Senelick, MD, and Karla Dougherty
Coping with Mild Traumatic Brain Injury by Diane Roberts Stoler, Ed.D., and Barbara Albers Hille
Confronting Traumatic Brain Injury: Devastation, Hope, and Healing by William J. Winslade

These books are all personal stories of how individuals and families have coped with brain injury:
In an Instant: A Family's Journey of Love and Healing by Lee and Bob Woodruff
Where is the Mango Princess? by Cathy Crimmins
In the Shadow of Memory by Floyd Skloot
To Love What Is: A Marriage Transformed by Alix Kates Shulman
A Three Dog Life by Abigail Thomas
Gifts from the Broken Jar: Rediscovering Hope, Beauty, and Joy by PJ Long
Over My Head: A Doctor’s Own Story Of Head Injury From the Inside Looking Out by Claudia L. Osborn
Listening in the Silence, Seeing in the Dark: Reconstructing Life After Brain Injury by Ruthann Knechel Johansen
Head Case: Stories of Brain Injury and its Aftermath by Paul Michael Mason