The Gita is called an Upanisad, because it contains the essence of Self-Knowledge, and because its teachings, like those of the Vedas, are divided into three sections: Karma (work), Upasana (devotion), and Jnana (knowledge).
This book is suitable for those who want to study the Gita for the first time. It contains the original text in Devanagari and word-for-word English rendering followed by a running translation and notes based on Shankara's commentary.