Are there any specific biographies of Sai Baba recommended for group study and community building?

Yes, the text specifically recommends the Shri Sai Satcharita. As detailed in Chapter 0, this work was written by the late devotee Shri Govind Raghunath, also known as Annasaheb Dabholkar. It is described as a recent, sweet, inspirational, and grace-filled biography of Shri Sachidanand Samarth Sadguru Sai Baba Maharaj. The text notes that this work is considered one of only two such detailed poetic Guru biographies in Maharashtra suitable for Parayans and Saptahs, making it an ideal text for fostering a community of devotees through shared study and devotion.