What methods are suggested for devotees to build a community and serve Sai Baba through literature?

The source material suggests that a key way to serve a Sadguru and build a community is through the study and devotional reading of their biographies. According to Chapter 0, a Sadguru accepts service from devotees through books in two ways: either by writing great works themselves or by having their biographies written for study and Parayans by the congregation of devotees. Performing Parayans or Saptahs of a detailed biography like the Shri Sai Satcharita allows devotees to perform Guru service and achieve the purpose of their lives, fostering a community around the teachings.