How can devotees contribute to spreading Sai Baba's teachings and building a community around him?

According to the preface, one of the primary ways to build a community and serve a Sadguru is through the creation and study of books. Chapter 0 explains that a Sadguru accepts service from devotees by having his biographies written. When other devotees study these detailed works and perform Parayans, or devotional readings, the writer gains the merit of serving humanity, and the readers also achieve the purpose of their lives. This shared practice of studying a central text like the Shri Sai Satcharita is a powerful method for fostering a community around a Guru's teachings.