@AnirbanM I would recommend reading 'The Tiger Throne' (if you can manage to get your hands on it) which is an abridged but we'll explained version of the original. It's in English, helps contextualise a lot of things in the movie.
Link for the book I'm referring to -
The Tiger Throne: Kalki’s Ponniyin Selvan Retold https://amzn.eu/d/84Dt9gs
@NehaKhazanchi wonderful. Thanks for the suggestion