Are there specific texts recommended for group study or Parayan to foster a community of Sai devotees?

Yes, the preface in Chapter 0 explicitly recommends a key text for this purpose. It notes that while earlier works by poets like Shri Dasganu Maharaj exist, they are not comprehensive enough for a detailed Parayan focused on a single saint. The text specifically highlights the Shri Sai Satcharita, written by Annasaheb Dabholkar, as a recent, sweet, and inspirational biography perfectly suited for Parayans and Saptahs. This work is presented as one of only two such detailed Guru biographies available, making it the primary recommended text for a community of Sai devotees to study together.