This book is an excellent manual for all Yoga Teachers and students of Yoga Psychology and Philosophy. It contains separate chapters dealing with Hatha Yoga, Raja Yoga, Kundalini Yoga, Bhakti Yoga and Ayurveda. It contains a detailed explanation of the Bhagavad Gita. It has Mantras for daily use and also many popular hymns or stotras. It also contains the latest discoveries of modern science and many new age ideas.