How can devotees serve a Sadguru like Sai Baba and build a community around his teachings?

According to the source, a Sadguru accepts service from devotees through books. As detailed in Chapter 0, devotees can render this service by having biographies written about their Guru. The community aspect is fostered when the writer and the congregation of devotees engage in the study and devotional reading (Parayans) of these detailed works. This shared practice is described as a form of service that helps other devotees achieve the purpose of their lives, thereby strengthening the community through a shared spiritual goal and the merit of serving God in humanity.