The Lord of the Rings is written by the English J.R.R. Tolkien. It is an epic high-fantasy novel series.
The story began as a sequel to Tolkien's fantasy novel The Hobbit. The Lord of the Rings consists of total three parts. You can download the series from the below link. Also check the prequel of this series here.
The fellowship of the Ring
The Two Towers
The Return of the King