Are there specific practices mentioned that help build a community around a Guru's life story?

Yes, the text outlines specific devotional practices. Chapter 0 describes how a Sadguru accepts service from devotees through books, either by writing them or having biographies written. A key practice for the community is performing a Parayan or Saptah, which is a devotional reading of a detailed poetic biography. The text notes that while some works by poets like Shri Dasganu Maharaj exist, they are not detailed enough for a Parayan of a single saint. Instead, comprehensive works like the Shri Sai Satcharita are considered ideal for this purpose, allowing a congregation of devotees to collectively study and serve the Guru.