Can you explain the concept of 'Guru service' through books and how it benefits the devotee community?

The concept of 'Guru service' through books involves devotees engaging with literature about their Guru. Chapter 0 explains that a Sadguru takes this service in two ways: either by creating works themselves or by having biographies written by devotees. For the community, the key practice is the study and devotional reading (Parayan) of these biographies. When a writer creates a detailed biography, they perform Guru service. When other devotees study and perform Parayans of that work, the writer gains the merit of serving 'God in humanity' (Jan-Janardan), and the participating devotees also achieve the purpose of their lives, fostering a spiritually connected community.