Articles on the training of the guardian warrior:

"The Apprenticeship" (excerpt introduction to guardian training from the book
"Journey to the Ancestral Self") by Tamarack Song

"Owl Eyes Saves Her People" as told by Tamarack Song

"The Way of the Wolf: Guardian Awareness" by Tamarack Song

"Nature Awareness: Sitting, Moving & Relating" by RedWolfReturns

"Fear" by Tamarack Song

"The Teaching Trail" by Tamarack Song

"Martial arts and the Guardian Warrior" by Tamarack Song

"The War Club" by Tamarack Song

"The Role of Yoga and Similar Exercises" by Tamarack Song

"Passion, the Core Fire" by Tamarack Song

"The Training Camp" by Tamarack Song

Books which contain information of relevance to the training of the
guardain warrior:

Concerning survival & scout training:

"Journey to the Ancestral Self" by Tamarack Song

"Participating in Nature" by Thomas J. Elpel

"Ishi in Two Worlds; A Biography of the Last Wild Indian in North
America" and "Ishi, Last of His Tribe" by Theodora Kroeber

"Indian Scout Craft and Lore" by Charles Eastman (Ohiyesa)

"Wilderness Evasion, A Guide to Hiding Out and Eluding Pursuit
in Remote Areas" by Michael Chesbro

"The SAS Mental Endurance Handbook" by Chris McNab

"The Worst-Case Scenario Survival Handbook" and "The
Worst-Case Scenario Survival Handbook: Travel" by Joshua Piven
and David Borgenicht.

Concerning the overall path of training:

"Mastery" by George Leonard

Concerning parallels with the martial arts:

"Ninjutsu, History & Tradition" by Dr. Masaaki Hatsumi

"Understand? Good. Play! Words of Consequence" by Dr. Masaaki
Hatsumi & Benjamin Cole

"The Principles of Effortless Power" by Peter Ralston

"There Are No Secrets; Professor Cheng Man-ch'ing and his Tai Chi
Chuan" by Wolfe Lowenthal

"Martial Arts Teaching Tales of Power and Paradox; Freeing the
Mind, Focusing Chi and Mastering the Self" by Pascal Fauliot

Concerning psychology:

"The Unfettered Mind, Writings of the Zen Master to the Sword
Master" by Takuan Soho

"The Black Science, Ancient and Modern Techniques of Ninja Mind
Manipulation" by Dr. Haha Lung & Christopher B. Prowant

"Building a Character" by Constantin Stanislavski

"The Japanese Negotiator, Subtlety and Strategy Beyond Western
Logic" by Robert M. March

"A Speeder's Guide to Avoiding Tickets" by James M. Eagan

"The Bare Facts About Bear Traps" by Glenn Woodworth

"101 Greatest Magic Secrets Exposed" by Herbert L. Becker