Sfm book doubt

Disha Bhawnani (CA, CS) (350 Points)

09 September 2014  

Friends, I did self studies with J.B. Gupta Sir's book for the may 2014 attempt. Even after solving half of the book once more I just don't feel that I have a good understanding of the subject. I also have S.D. Bala Sir's book. Should I go for it? 

SFM & Costing are subjects which demand some level of creative thinking from students,please help me out on the choice of book.