Ramana MaharshiIf one remains merely as consciousness [that is, as ‘I am’] ignorance will not exist. Hence, ignorance is false; Self-consciousness alone is real. When correctly known, it is ignorance to say that there is ignorance. Verily, pure consciousness is our nature. Thus should you know.

Ramana Maharshi

Māṇḍūkya Upaniṣad Reference Materials:

Video/Audio Lectures

Swami Tadatmananda
8 classes (~60 mins each)

Swami Paramarthananda
78 classes (~55 mins each)

Swami Sarvapriyananda
4 classes (~60 mins each)

Swami Anubhavananda
6 classes (~75 mins each)

Mandukya Upanishad (Agama Prakarana)2 of 6 @ Bengaluru 2015 (English) 03683 NR YTC

Swami Sarvapriyananda
Who Am I? (~90 min talk) (Intro only. Must compliment with others below.)

Swami Sarvapriyananda at IITK - "Who Am I?" according to Mandukya Upanishad-Part 1

Swami Tattwamayananda
44 classes (~60 mins each)

Mandukya Upanishad Class 2

Swami Rama
8 classes (~75 mins each)

Mandukya Upanishad (2/8) Swami Rama

Swami Paramananda Bharti
~15 classes (~90 mins each)

001 Mandukya Upanishad