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

Advaita Makaranda
Nectar of Non-Duality, by Lakshmidhara Kavi

Reference Materials:

Video/Audio Lectures

Swami Paramarthananda
7 classes (~90 mins each)

Swami Dayananda Saraswati
33 classes (variable lengths)

Advaita Makaranda - Class #1 - 1984 Spiritual Camp - Swami Dayananda

Swamini Satyavratananda
12 classes (~55 mins each)

Swami Viditatmananda
10 classes (search for "Advaita Makaranda" on the linked page)

Swami Tattvavidananda
7 classes (search for "Advaita_Makaranda" on the linked page)