Brahmavaivarta Purāṇam (vol 1) is one of the well-known purāṇas. The story goes that all the Purāṇam, including Brahmavaivarta Purāṇam is written by Veda Vyāsa. Brahmavaivarta Purāṇam in its entirety contains eighteen thousand verses. It is considered one of the Mahapurāṇas. It is said to be written in the time span (kalpa) of rathantara. Different purāṇas are thought to be identical with different parts of the body of Sri Hari and Brahmavaivarta Purāṇa is imagined to be the left knee of Sri Hari. The resulting idea is that the Purāṇam are manifestations of different parts of the body of Sri Hari signifying the importance of the Purāṇam.
This Purāṇam contains discourses on how Brahman, the ultimate reality, evolves itself into the manifold things and events in the world. It contains many dialogues between different godheads all describing the story of creation in many different ways. The different perspectives of the jnani, bhakta etc have been described in detail.