Hinduism is the predominant religious tradition of the Indian Subcontinent.
Hinduism is known to its followers as Sanātana Dharma (a Sanskrit phrase meaning "the eternal law", "the eternal law that sustains/upholds/surely preserves"), amongst many other expressions.
Generic "types" of Hinduism that attempt to accommodate a variety of complex views span folk and Vedic Hinduism to bhakti tradition, as in Vaishnavism. Among other practices and philosophies, Hinduism includes a wide spectrum of laws and prescriptions of "daily morality" based on the notion of karma, dharma, and societal norms such as Hindu marriage customs.
Hinduism grants a great degree of freedom of belief and worship. Also, the concept of heresy is absent.
Hinduism is formed of diverse traditions and has no single founder.
Among its roots is the historical Vedic religion of Iron Age India and, as such, Hinduism is often called the "oldest living religion" or the "oldest living major religion" in the world.
A large body of texts is classified as Hindu, divided into Śruti ("revealed") and Smriti ("remembered") texts.
These texts discuss theology, philosophy and mythology, and provide information on the practice of dharma (religious living).
Among these texts, the Vedas are the foremost in authority, importance and antiquity. Other major scriptures include the Upanishads, Purāṇas and the epics Mahābhārata and Rāmāyaṇa.
The Bhagavad Gītā, a syncretistic treatise from the Mahābhārata, is of special importance. It combines Vedanta, Yoga, and some Samkhya philosophy into its discussion of good conduct and life.
(description from wikipedia)