How can devotees offer service to their Guru through literary works?

According to the source material, a Sadguru accepts two primary forms of service from devotees through books. As detailed in Chapter 0, the first is when the Guru themselves creates a monumental work like the Shri Dnyaneshwari. The second method, also explained in Chapter 0, involves the Guru having their biographies written by devoted followers. Other devotees then perform service by diligently studying these biographies and conducting Parayans, or devotional readings. This practice of study and recitation allows both the writer and the readers to serve the Guru and achieve the purpose of their lives.