Hinduism originated in India around 1500 BC and is one of the oldest religions still practiced today. It is a diverse set of beliefs that includes worshipping gods like Brahma, Vishnu, Shiva and their avatars. Hindus believe in an ultimate reality called Brahman that can be experienced through different paths including karma (actions), samsara (cycle of rebirth), and moksha (liberation). Key concepts include dharma (righteous living), purusharthas (goals of life), and the varna and ashrama systems which provide a social and life stage framework. Yoga and other practices aim to unite individuals with Brahman.