What are the main differences between 'Kamya' and 'Nishkam' readings of Guru biographies?

According to the details in Chapter 0, the distinction between 'Kamya' and 'Nishkam' use of Guru biographies lies in the reader's intention. A 'Kamya' reading is performed with desire, specifically for worldly prosperity or for the removal of worries, calamities, distress, and diseases. In contrast, a 'Nishkam' reading is done with a selfless mind, aiming for the ultimate spiritual goal of liberation from the world and freedom from the cycle of birth and death. Chapter 0 further emphasizes that Nishkam Guru service, regardless of its form, will always be considered superior.