What is considered the most effective way to serve a Guru through writing, according to the text?

The preface states that the best and most certain service in writing is to compose the biography of one's own Sadguru. This should be undertaken with a pure heart, excellent faith, and unwavering devotion. As explained in Chapter 0, this service is most effective when the biography is detailed and in poetic form, as poetry is easier to memorize and recall. The text further elaborates that this service is performed through personal study, performing hundreds of readings (Parayans), and weekly recitations (Saptahs), which does not interfere with one's worldly duties.