Idt video lectures

Farooq Sir's lecture 

if you want simplified, indepth knowledge and conceptual clearity go for farooq sir's lectures. In my opinion he is the best professor for DT and IDT .   

As far as conceptual clarity goes u should opt for Farooq Haque Sirs videos. 

If u wish to view his demo lectures here is the link - 

https://www.youtube.com/watch?v=_1HhiXaga-w

Hope it helps.