There is a free Polars user guide [0] as a part of Polars project. It was known as "polars-book" before it has been was in-tree [1]. [0] https://docs.pola.rs/u

There is a free Polars user guide [0] as a part of Polars project. It was known as "polars-book" before it has been was in-tree [1]. [0] https://docs.pola.rs/user-guide/ https://docs.pola.rs/user-guide/ [1] https://github.com/pola-rs/polars/tree/main/docs/user-guide https://github.com/pola-rs/polars/tree/main/docs/user-guide