Pls suggest

I also did this book for last 2 attempts and I have realised one thing,after studying from this book thoroughly you can write a research paper on IDT. its vast and many of the things in this book are never asked. I think the main reason is that we are not able to revise this book just before the exam,they should come up with summary module type of thing as in DT. Also I would like to say to future examinees who refer bangar for IDT self study,either make your notes or for third round of revision purpose,purchase Ajay jain's book.

THANKS ATIR