Yoga jyoti is a simple guide to Patanjali yoga. Spirituality and yoga are inseparable. This book tries to explain the yoga practices and how they are spiritually beneficial. This book describes few yoga asana, pranayama, mudra, kundalini yoga and the notes I have taken from my interactions with Sadguru M. Narasimha Prabhu and my understanding of two chapters of Patanjali Yogasutra.