How does the act of writing and reading a Guru's biography, like the Shri Sai Satcharita, contribute to the community of devotees?

According to Chapter 0, the creation and study of a detailed Guru biography is a form of Guru service that directly builds community. When a writer creates a detailed poetic biography, they are performing a service to the Guru. Simultaneously, when other devotees study and perform Parayans of that work, the writer gains the merit of serving God in humanity. This shared activity helps the devotees achieve the purpose of their lives. The Shri Sai Satcharita, written by Annasaheb Dabholkar, is cited in Chapter 0 as a prime example of such a work that facilitates this dual service and community engagement, much like the famous Guru Charitra.