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

Praśna Upaniṣad Reference Materials:

Video/Audio Lectures

Swami Paramarthananda
21 classes (~55 mins each)

Swami Anubhavananda
12 classes (~45 mins each)

Prashnopanishad an overview of life 11

Swami Nikhilananda
7 classes (~80 mins each)

Prasnopanishad - Introduction and Question 1 - Shloka 1 to 4