Discovery of India(Bharat Ek Khoj) Jawaharlal Nehru, Directed by Shyam Benagal
(This is history of india - ancient to modern. You can watch selectively if the list is long)
https://youtube.com/playlist?list=PLqtVCj5iilH4w0Y8KBB4fqBu25T0sGhXG
Making of Indian Constitution (Samvidhaan)
Directed by Shyam Benagal
https://youtube.com/playlist?list=PLAa8vphOlKtCIgxQ5E0abnO_esick1qYn
Justice by Michel Sandel (For ethics and essay papers)
https://youtube.com/playlist?list=PL30C13C91CFFEFEA6
General Science (Physics, Chemistry, Biology), Geography and Biographies
Makemegenius Youtube Channel. See other videos as well from this channel.
https://youtube.com/playlist?list=PL3A11E3745F6F71FE
Modern History by Seenaiah sir
https://www.youtube.com/playlist?list=PLaCcEBBNTuef7ufkywMLrqm3fKZMrkc1u
or
https://www.youtube.com/watch?v=lMwRSj-S-F0
Note: There are many videos on youtube, but finding right videos which are comprehensive and brief is a difficult task. Many a times, we end up wasting lot of our time, gaining nothing much and not remembering what we heard/watched, leading to frustration. I suggest that you spend(or invest) some time in gathering good printed material - NCERT/State Books for Social Studies and General science, Govt publications like India Year book, Economic Suvery, Budget documents, photo copies of class notes from good lecturers, printed material from coaching institutes, books from some renowned private publications suggested by toppers etc. in this order. Use internet and youtube only for latest topics like Science and Technology, Economy etc. which you don't find in conventional books.