How can a devotee achieve their life's purpose through the study of a Guru's biography?

The preface in Chapter 0 explains that by studying and performing Parayans of a detailed poetic Guru biography, devotees can achieve the purpose of their lives. This is because the Sadguru accepts this study as a form of service. Engaging with a comprehensive text like the 'Shri Sai Satcharita' is presented not merely as reading, but as a devotional act. This act of study connects the devotee to the Guru and allows them to participate in a virtuous cycle where the writer also gains merit, ultimately leading to spiritual fulfillment for the reader.