Karma Yoga, derived from the Bhagavad Gita, emphasizes non-attachment to results while engaging in actions, promoting spiritual evolution and enlightenment. It categorizes actions into four types and outlines the components of karma, including goal, action, and reward, urging individuals to perform their duties selflessly. Key teachings include the importance of altruism, physical and mental austerity, and fulfilling societal debts, aiming for a harmonious balance between self and community.