Nisargadatta MaharajThe sense of being, of 'I am' is the first to emerge. Ask yourself whence it comes, or just watch it quietly. When the mind stays in the 'I am' without moving, you enter a state that cannot be verbalized but can be experienced. All you need to do is try and try again.

Nisargadatta Maharaj

Taittirīya Upaniṣad Reference Materials:

Video/Audio Lectures

Swami Tadatmananda
27 classes (~60 mins each)

Swami Nikhilananda
12 classes (~75 mins each)

Taittiriya Upanishad - Brahmananda Valli - Ch 2, Sec 1, Intro and Sh.1

Swami Anubhavananda
7 classes (~75 mins each) on 3rd Chapter

Taittereya Upanishad 3rd Chapter, 2 of 7

Swami Sarvapriyananda
Defining God, based on Taittiriya Upanishad (~90 min talk)

Swami Sarvapriyananda at IITK: Defining God, based on Taittiriya Upanishad

Swami Paramarthananda
51 classes (~55 mins each)

Swami Dayananda Saraswati
13 classes (~60 mins each) on Ananda Mimamsa

Swami Sarveshananda
11 classes (~90 mins each)