How can devotees serve Sai Baba and help others learn about him through books?

Based on the preface of the Shri Sai Satcharita, the Sadguru accepts two main forms of service through books. Devotees can engage in this service by studying and performing Parayans (devotional readings) of detailed poetic Guru biographies. When a writer creates such a biography, they are performing Guru service. Furthermore, as mentioned in Chapter 0, when other devotees study and perform Parayans of that work, the writer gains the merit of serving God in humanity and performing public service, which helps others achieve the purpose of their lives. This collective study is a powerful way to build a community around the Guru's teachings.