Surya Namaskara by Swami Satyananda Saraswati (video)
Swami Satyananda Saraswati has written an extensive book on the practice of Surya Namaskar, the yoga Sun Salutation. This book teaches the complete Surya Namaskar technique, including the correct sequence of asanas, breathing pranayama, concentration locations, mantra, and bandhas. The inner meaning / esoteric science of Surya Namaskar is also explained. This book is highly recommended by Sunlightenment to deepen your Sun Yoga spiritual practice and improve your health.
Included in this post is a video example of the Surya Namaskar yoga practice, including the sacred bija mantras for each asana movement.