Here I am putting my own experience as example- So when I bought this book and coming back to my place then in the taxi I was just checking the content and I found, there was a lot of things (or should I say Chapters instead of things to be professional.HAHA) which I already knew and decided that I would read Historical Aspect with History and Preamble of Indian Constitution would be the part to read very first and eventually when arrived on the topics which I already knew, I did not pay any special attention just because which I already knew. And the most intrusting part of my AATMAKATHA is when I appeared in Prelims 2015, I made a lot of mistakes in the concepts which I already knew.