Books and DVDs by Dr. Jwing Ming Yang available at YMAA publishing.  Summer seminars at the YMAA Retreat Center in Miranda, CA.

Books and DVDs by Grand Master Shou Yu Liang, especially his book, Qigong Empowerment.

Books and DVDs by Grandmaster Mantak Chia.  

Books, DVDs, and seminars by Master Zhongxian Wu.  

Qigong Resources recommened by Da Shifu Roger Blough