The provided text mentions 'Parayan'. What is this practice, and which specific books are identified as being suitable for it?

According to the preface in Chapter 0, Parayan refers to the daily study and recitation of sacred texts. The source identifies several works as being appropriate for this practice. The 'Brihat or Thorale Guru Charitra' is explicitly mentioned as being 'used for Parayans' and studied daily in thousands of places. Additionally, the two short but excellent biographies of Sai Baba written by Shri Dasganu Maharaj, found in his 'Bhaktalilamrut' and 'Bhaktisaramrut', are also described as being suitable for study and Parayan.