Hello,


If you are preparing for UPSC CSE then you will find a huge number of online platforms that are helping in the preparation of the candidates.I would suggest you some of the best channels.
Only IAS (Daily news analysis)
Mrunal (Economics)
Study IQ (current affairs)
PMF IAS (Geography)
Unacademy (Polity,History)
Sleepy classes (art and culture)

Videos are good for beginners but after that you will have to switch to standard books for better understanding.

I hope this helps.