Bhagavad Gita is termed, "The Divine Song of God." It consists of 18 chapters, called 18 yogas. Yoga encompasses a wide range of ways to connect to the Lord with one’s highest potential. It is not just limited to the pose of physical body, or breathing exercise, as we have heard of, in the western hemisphere.
Within these 18 chapters of Bhagavad Gita, there are a total of 700 verses (sloka's).
Arjuna Vishada yoga (Arjuna's Grief - 47 verses): This chapter deals with the grief of Arjuna. He had to make a choice between fighting the war while attempting to kill his most revered guru, friends, close relatives, and many innocent warriors who were on the other side; or to run away from the battlefield for the sake of preserving peace and nonviolence.
Karma yoga (Virtue in Work - 43 verses): Krishna explains what Karma yoga is. It is the performance of prescribed duties without attachment to results. That is the prescribed and appropriate course of action for Arjuna.
Gyaana–Karma-Sanyasa yoga (The Religion of Knowledge - 42 verses): Krishna reveals that he has lived through many births, always teaching yoga for the protection of the pious and the destruction of the impious. He also stresses the importance of accepting a guru.
Karma–Sanyasa yoga (Religion by Renouncing Fruits of Works - 29 verses): Arjuna asks Krishna if it is better to forgo action or to act ("renunciation or discipline of action"). Krishna answers that both are ways to the same goal, but that acting in Karma yoga is superior.
Dhyan yoga or Atmasanyam yoga (Religion by Self-Restraint- 47 verses): Krishna describes the Ashtanga yoga. He further elucidates the difficulties of the mind and the techniques by which mastery of the mind may be gained.
Gyaana–ViGyaana yoga (Religion by Discernment- 30 verses): Krishna describes the absolute reality and its illusory energy Maya.
Aksara–Brahma yoga (Religion by Devotion to the One Supreme God - 28 verses): This chapter talks about the importance of the last thought before death. It is the one that differences between material and spiritual worlds; light and dark paths that a soul takes after death
Raja–Vidya–Raja–Guhya yoga (Religion by the Kingly Knowledge and the Kingly Mystery - 34 verses): Krishna explains how His eternal energy pervades, creates, preserves, and destroys the entire universe.
Vibhuti–Vistara–yoga (Religion by the Heavenly Perfections - 42 verses): Krishna is described as the ultimate cause of all material and spiritual existence. Arjuna accepts Krishna as the Supreme Being, quoting great sages who have also done so.
Visvarupa–Darsana yoga (The Manifesting of the One and Manifold - 55 verses): On Arjuna's request, Krishna displays his "universal form" (Viśvarūpa), emitting the radiance of a thousand suns, containing all other beings and material in existence.
Bhakti yoga (The Religion of Faith - 20 verses): Krishna glorifies the path of devotion to God. Krishna describes the process of devotional service (Bhakti yoga). He also explains different forms of spiritual disciplines.
Ksetra–Ksetrajna Vibhaga yoga (Religion by Separation of Matter and Spirit - 35 verses): The difference between transient perishable physical body and the immutable eternal soul is described. The difference between individual consciousness and universal consciousness is also explained.
Gunatraya–Vibhaga yoga (Religion by Separation from the Qualities - 27 verses): Three modes (gunas) of material nature pertaining to goodness and passion is explained. Their causes, characteristics, and influence on a living entity are also described.
Purusottama yoga (Religion by Attaining the Supreme - 20 verses): The transcendental characteristics of God such as, omnipotence, omniscience, and omnipresence is explained. Krishna describes a symbolic tree (representing material existence), which has its roots in the heavens and its foliage on earth. Krishna explains that this tree should be felled with the "axe of detachment", after which one can go beyond to his supreme abode.
Daivasura–Sampad–Vibhaga yoga (The Separateness of the Divine and Undivine - 24 verses): The human traits of the divine and the demonic natures are discussed. He counsels that to attain the supreme destination one must give up lust, anger, greed, and discern between right and wrong action by discernment through Buddhi and evidence from the scriptures.
Sraddhatraya-Vibhaga yoga (Religion by the Threefold Kinds of Faith - 28 verses): Krishna qualifies the three divisions of faith, thoughts, deeds, and even eating habits corresponding to the three modes (gunas).
Moksha–Sanyasa yoga (Religion by Deliverance and Renunciation - 78 verses): In this chapter, the conclusions of previous seventeen chapters are summed up. Krishna asks Arjuna to abandon all forms of dharma and simply surrender unto the Lord and describes this act as the ultimate perfection of life.