12 November 2013
There are regular ammendments in dt & idt .So its better to take their coaching at last. DT-vinod gupta sir(face to face or satellite classes) IDT-Deepak gupta sir/rajkumar sir/manoj batra( classes provided by all in face to face mode or satellite mode). Though both subjects can be managed by self study also,even if you have some basic idea. DT-Vinod gupta modules IDT-vandana bangar
It would be better if you start your coaching anytime after march 2014
Do include practice manual,rtp & supplementary modules in your preparation All the best