The Matsya Purana is traditionally regarded as the oldest of the eighteen major Puranas and is believed to have been composed around the 4th century CE.

The primary purpose of the Puranas is to narrate the lives and deeds of deities, recounting their exploits, battles, and interactions with each other and with humans.

The Vishnu Purana is primarily dedicated to Lord Vishnu, exploring his various incarnations, his role as the preserver of the universe, and his relationship with other deities.

The Devi Bhagavata Purana is dedicated to the goddess Devi, also known as Shakti, and narrates her various forms, manifestations, and interactions with other deities.

The Bhagavata Purana contains the story of the churning of the ocean of milk, a significant event in Hindu mythology that resulted in the emergence of various treasures, including the goddess Lakshmi and the poison Halahala.

Hiranyakashipu was the demon who stole the Vedas from Lord Brahma, leading to the incarnation of Lord Vishnu as Narasimha to retrieve them.

The Ramayana, though not strictly a Purana, is an epic poem that narrates the story of Lord Rama's exile to the forest, his battle with the demon king Ravana, and his eventual return to Ayodhya.

The Skanda Purana is known for its extensive descriptions of various pilgrimage sites in India, providing information about their religious significance and associated legends.

Vyasa, also known as Krishna Dvaipayana, is traditionally considered the compiler of the Brahma Purana and several other Puranas.

The Shiva Purana is primarily dedicated to Lord Shiva, narrating his various forms, manifestations, and interactions with other deities.

Hiranyaksha was the demon who stole the earth and took it to the underworld. Lord Vishnu incarnated as Varaha, the boar, to retrieve the earth and kill Hiranyaksha.

The Bhagavata Purana contains the story of the birth of Lord Krishna, his childhood pastimes, and his various exploits.

Parashara, the father of Vyasa, is traditionally considered the compiler of the Vishnu Purana.

The Padma Purana is known for its extensive descriptions of various temples and their associated rituals, providing insights into the religious practices and traditions of ancient India.

Hiranyakashipu was the demon who persecuted his son Prahlad for his devotion to Lord Vishnu. Lord Vishnu incarnated as Narasimha, the man-lion, to kill Hiranyakashipu and protect Prahlad.