Please need guidance

Yes it is more than sufficient if your concept regarding particular subject is clear than it is enough for you, solve the problem given in above stated materials. Best of Luck

Mr Mohit, Your question is a Bit Stupid from a Person asking for rank,

Rankers are Very Very Clear in their Methodology of Studies 2.5 Months before Exams ( Nov 013 Attempt ) & they dont go out for suggestions for Books & Material & Areas which they have to study. 

I would be sounding a bIt arrogant but M Straight in Replying with no sugar or Honey but a direct Spoon of Bitterness into it. But facts remain Facts 

For conceptual clearence in subjects like LAW n AUDIT...

You can go for referece book...

However, Institute's books are enough....

Mr Mohit, If your Attempt is May 2014 then I can really say that You have enough time to AIM & Become a Ranker, Review your study Plan giving a Deep Thought to your Strenght & Weaknesses in the Studies till date & sort out the Topics based on your self SWOT analysis, You will exactly find where You stand & where you Need to reach to secure a Rank. 

Vry Very Honestly Tell you that You are the Only Best Judge for your strategy Preparations for your Studies, as You only are aware of your SWOTS. More & varied suggestions may put you in a Confusion. As every other person suggesting you would give his Own experience which is based on his Own capacities of Studies & Grasping the Subject & Studies. Which is always different from Person - Person. else There would not have been Rank 1 & Rank 2. as Both this are equally Intelligent Students but then too one is at Rank 1 & Other at 2. I hope my Point is clear. So my Friend self analysis is the Best