I need suggestions from every IH&C aspirant. Is there still scope of getting high marks in this subject? I'm planing to start my preparation with this optional subject of mine for CE-2016. After 2015 attempt, i'm thinking to get rid of the weaknesses of mine in this subject, and obviously the difficulty I faced was in 2nd paper.
So, what should be exact way of preparation? Which books should we consult in the wake of 2015 papers of IH&C? Kindly name a book for paper 2nd preparation.

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"But screw your courage to the sticking place,
And we'll not fail." _Shakespeare, 'Macbeth')