The Bhagavad Gita, the Essence of Vedanta

The Bhagawan Gita forms a part of the root texts of Vedanta. Krishna gives these teachings to Arjuna and through Arjuna to all of us. If there is one book you should study, if you want to know Hinduism, it is definitely the Bhagavad Gita. Upanishads form part of the Ved as they form the final teachings of the Vedas.