How can Guru biographies and other spiritual texts be used, and what is the distinction between these uses?

Chapter 0 explains that Guru biographies and other spiritual knowledge texts can be used in two distinct ways: with desire (Kamya) and with a selfless mind (Nishkam). The Kamya approach involves using the texts for worldly purposes, such as achieving prosperity or seeking relief from worries, illnesses, or other calamities. In contrast, the Nishkam approach is selfless and is undertaken for the ultimate spiritual goal of liberation from the cycle of birth and death. The preface unequivocally states that Nishkam Guru service, whether through writing a biography or any other means, is always considered superior.