Idt self study

You may refer Bangar's book

yes many students do on their own.. i too had done the same by using bangar book and the latest rtp to cover all amendements

You can do it easily...first read theory and understand concept..make short summary or notes of it,then solve as many problems you can.It will take around 8-10 days to complete whole idt.

And for DT?

Either TN Manoharan or Vinod Gupta

Ok thanks...