Why does the provided text discuss poets like Dasganu Maharaj instead of explaining 'shraddha' and 'saburi'?

The provided text focuses on poets like Shri Dasganu Maharaj because its subject is the tradition of composing Guru biographies in Marathi literature, not the specific teachings of a Guru such as 'shraddha' and 'saburi'. Chapter 0 clarifies that famous poets have written biographies of saints in the Ovi meter. It distinguishes between comprehensive, detailed biographies suitable for 'Parayan' and the shorter ones found in larger collections. The purpose of this preface is to contextualize the creation and devotional use of such texts as a form of 'Guru service' that benefits both the writer and the reader, rather than to expound upon specific spiritual doctrines.