What role does literature, like writing or reading biographies, play in serving a Sadguru like Sai Baba and his community?

The source material highlights that a Sadguru accepts service from devotees through books in two primary ways. As detailed in Chapter 0, this can be through the Sadguru's own writings or, more relevant here, by having devotees write their biographies. By creating a detailed work like the Shri Sai Satcharita, the writer performs Guru service. This service then extends to the wider community when other devotees study and perform Parayans of the work, which the Sadguru accepts as service from the entire congregation of devotees.