Most urgent help

GOPAL AGGARWAL (DOING NOTHING) (1339 Points)

10 October 2011  

LAST NIGHT I visited the Rehul bansal where I see the about the book of Dr JB Gupta for SFM.

I am using the book of SD Bala but at some points I have confusion. 

So I want to ask whether I have to continue with the same or Should have change the book.

If, JB Gupta is good then guide me