Very extensive set of 16 lectures on most aspects (archaeology, architecture, philosophy, science and technology, arts, economy and ethics) of Indian civilization given by Michel Danino at IIT Kanpur. These are really amazing lectures and highly recommended for anyone interested in knowing about ancient Indian civilization and how it developed, what are its main characteristics, how it influenced both the far East and the West.
For a quite some time I have been searching for some lucid material on the foundations of Indian culture, the so called sanatan dharma, that can be understood by everyone. Finally, I found these 18 hours lectures by R. Ganesh which are amazing, because they are very easy to understand and at the same time covers most aspects of the foundations of sanatan dharam in an intimate setting (conversationally).
Other parts are available on the same channel.