How can devotees serve Sai Baba and help spread his teachings to a wider community?

Based on the preface detailed in Chapter 0, a Sadguru accepts service from devotees through books in two primary ways. The first is by having devotees write their biographies, and the second is by accepting service through the study and devotional readings, or Parayans, of these works by both the author and the larger congregation. This act of studying a detailed Guru biography is considered a form of Guru service. Chapter 0 further explains that when other devotees also engage in these studies, the writer gains the merit of serving God in humanity and performing public service, which in turn helps others achieve the purpose of their lives.