Ashtanga Yoga Research Institute: http://kpjayi.org
Introduction to Sri K. Pattabhi Jois and his original Mysore yoga school.
Ashtanga Yoga New York: http://ayny.org
New York branch of Ashtanga yoga school.
R. Sharath: http://www.rsharath.com/indexb.php
Grandson of Parrabhi Jois, and the only student to master 5 series of Ashtanga.
Journal of publication
Sri Ganesha Tea & Book Stall: http://souljerky.com
Commentary and posts from the spiritual community.