dt and idt self study

yes u can prepared idt very well by YOGENDRA BANGAR & for dt i think institute publication is more than to sufficient.

many of mine friends got idt exempted through bangar.
 for dt no certain material is getting.

for DT-vinod gupta/v.k. singhania.....

      IDT-v s datey...................................

hey in bangar services like manpower requritment is not given. whereas in exam it is being asked.

can anyone provide notes on services.