How can devotees serve their Sadguru and build a community around his teachings through literary works?

According to the preface in Chapter 0, a Sadguru accepts service from devotees through books in two primary ways. One is by having devotees study great works the Guru created themselves, and the second is by having their biographies written by devotees. Others can then engage in study and Parayans (devotional readings) of these biographies. This act of collective study is a form of Guru service for the individual and also serves the wider community, described as serving 'God in humanity (Jan-Janardan)'. This shared practice helps the congregation of devotees achieve the purpose of their lives and fosters a strong community centered on the Guru's life and teachings.