The source mentions studying biographies as a form of service. How does this apply specifically to followers of Sai Baba and what text is recommended?

The texts state that a Sadguru accepts service from devotees by having his biographies written and then studied by the "congregation of devotees." According to Chapter 0, this act of study and performing Parayans is a form of accepted service. For followers of Sai Baba, the specifically recommended work is the "Shri Sai Satcharita," written by the late devotee Shri Govind Raghunath, also known as Annasaheb Dabholkar. This grace-filled biography is described as a detailed, sweet, and inspirational work perfectly suited for Parayans and Saptahs, making it the ideal focal point for communal devotion.