Lectures on Advaita Vedanta that I enjoyed listening to:

1. Who Am I — Part I (YouTube) by Swami Sarvapriyananda (monk at Ramakrishna Order) at IIT Kanpur, 2014.
2. Who Am I — Part II (YouTube) by Swami Sarvapriyananda (monk at Ramakrishna Order) at IIT Kanpur, 2014.
3. Sadhana (YouTube) by Swami Advayananda (President, Chinmaya International Foundation), 2015.

These lectures are really good!