How can devotees serve Sai Baba and build a community through the study of his life and teachings?

According to the provided texts, a Sadguru accepts service from devotees through books. A key way to serve and build community is by having devotees write detailed biographies, which are then studied by the wider congregation. As described in Chapter 0, when devotees collectively study and perform 'Parayans' (devotional readings) of a Guru's biography, it is considered a form of service that benefits everyone involved. This shared spiritual practice of studying a foundational text fosters a sense of unity and helps devotees achieve the purpose of their lives, thereby strengthening the community.