I want to watch lectures ,but I'm confused which ones to watch

So I have completed ancient and medieval history ,art and culture and internal security with all of those I have done almost half of polity and now I'm confuses which one to start .

I was thinking about watching World history but heard/ saw other posts that it isn't worth to watch so much lectures for modern history .

I don't want to start the syllabus of modern Indian history yet ,so if anybody have any idea which subject lectures should I start pls help

I'm fine with anything have less than 15 lectures