If a devotee feels their spiritual practice is stale, what method of service involving books does the preface suggest a Sadguru provides for them?

For devotees who may feel spiritually stagnant, the preface to the Shri Sai Satcharita outlines a powerful form of service that a Sadguru facilitates. Chapter 0 explains that a Sadguru, like Sai Baba, accepts service through his biography. By having a devotee write a detailed account of his life, such as the Shri Sai Satcharita, he creates a vehicle for others to connect with him. Devotees can then perform service by undertaking dedicated study and devotional readings (Parayans) of this text. This engagement is a prescribed method for devotees to achieve the purpose of their lives and reinvigorate their spiritual journey.