There are some classic books on the practice of pranayama, the theory and philosophy of the subtle, vital pranic force and Swami Satchidananda’s “Breath of Life” CD that includes a guided pranic healing visualization.
1. Breath of Life CD: Integral Yoga Pranayama taught by Swami Satchidananda
3. Science of Breath by Swami Rama, Rudolph Ballentine MD and Alan Hymes
4. Science of Breath by Yogi Ramacharaka
5. The Yoga of Breath: A Step-by-Step Guide to Pranayama by Richard Rosen