In what ways does a Sadguru accept service from devotees through literary works, and how does this foster a community?

Chapter 0 describes two primary ways a Sadguru takes service from devotees through books. The first is when the Sadguru creates great works themselves. The second, which is highly relevant to community building, is when the Sadguru has their biographies written by devotees. The service is then accepted through the study and Parayans of these biographies, not just by the writer, but by the entire congregation of devotees. This shared activity of reading and study, centered around a work like the Shri Sai Satcharita, naturally forms a community of practice and shared devotion, allowing devotees to collectively serve the Guru and achieve the purpose of their lives.