These are the links of You Tube Video Lectures
1. Prof. Mrs. Shailaja A. Changundi:
https://youtu.be/tUYE6jq_Bog
2. Dr. S.I. Noorani
https://www.youtube.com/watch?v=cz7CXm_uT6g3. Dr. Sunita J. Velhal
https://www.youtube.com/watch?v=R194ME3fYYY&t=1s
4. Dr. D. G. Ghodake
https://www.youtube.com/watch?v=5MFzaJXTd9A