Included with purchase is a free audiobook for streaming/download. It's important to hear the transcendental sound vibration from devotees.

This is a phenomenal collection of Srila Prabhupada's lectures, writings, morning walks, discourses and many more. One must have this book. I would recommend to go for a hard copy of the book as the Kindle edition doesn't show the Devanagari fonts properly and it creates trouble while reading.