On the next pages you will find "The Contents of the Bhagavad Gita Summarized", which is its second chapter and which contains 72 verses. 
Bhagavad Gita appears in the Mahabharata, an ancient Vedic epic. It is considered sruti, which means “that which is learned through hearing”, because Krishna, the Unlimitedly Playful and Naughty One, speaks it. And it is His illusory capacity which rules the material universe, the world of the constantly changing. That is why never ever anything goes wrong. The Bhagavad Gita is spoken to Arjuna, a warrior who faces a war he does not want to fight and with which Krishna has a dialogue.