How can writing and studying books about Sai Baba be considered a form of service that helps grow the community?

The preface in Chapter 0 outlines that a Sadguru takes service from devotees through books, specifically by having his biographies written and then accepting service through their study and Parayans from both the writer and the congregation. When a writer creates a detailed biography, they perform Guru service. As Chapter 0 further explains, when other devotees study this work, the writer gains the merit of serving God in humanity (Jan-Janardan) and public service. This shared act of study and devotion, centered on a comprehensive text, naturally cultivates a strong, engaged community where participants can achieve the purpose of their lives.