The Path of Perfection offers a brilliant exposition on the path of bhakti yoga, a simple but all-inclusive form of yoga for the modern age. Even those who are entangled in the complexity and chaos of modern materialistic life can begin a simple practice that purifies the mind and elevates the consciousness.
Learn the science of yoga in all its aspects in "The Path of Yoga" book. Find out why your current yoga practice might not be serving you as fully as it can. The Path of Yoga explains the highest standard for human beings, the practice of the science of self-realization, bhakti-yoga.