The Bhagavad-Gita contains 700 verses divided in eighteen chapters in total.
The Bhagavad-Gita starts on the battlefield of Kurukshetra. Krishna gives Arjuna advice when Arjuna has doubt on the battlefield and he fails to lift his Gandiva bow.
Krishna counsels Arjuna on the greater idea of dharma or universal harmony and duty. During the discourse, Krishna reveals his identity as the Supreme Being Himself), blessing Arjuna with an awe-inspiring glimpse of His divine universal form.

Krishna gives us three ways to salvation:

1: Jnana Yoga or Self Transcending Knowledge
Jnana Yoga is a process of learning to discriminate between what is real and what is not, what is eternal and what is not. Illusion or incorrect observation will obstruct to get that part of you that is Devine.

2: Karma Yoga or Selfless Action
Karma Yoga is essentially acting, or doing one’s duties in life as per his/her dharma, or duty, without concern of results. You have to do the wright things.

3: Bhakti Yoga or Devotion
Bhakti has the root Sanskrit word Bhaj which means to be attached to God. Bhakti defines the selfless love of the devotee towards his or her Ishta Devata – Personal God. Through meditation, prayer en calling Gods name salvation can be achieved