Hello Ravi,
The only author that I can recommend in this field is Simon Benninga and his book "Financial Modeling" http://www.amazon.com/s/ref=nb_sb_noss_1/188-1209697-2643008?url=search…
Unfortunately, I have not read the most recent edition of the book. But back in the late 90s - when I was working - his book was excellent and showed you how to use Microsoft Excel to create financial models.
I wish you tremendous success!
Jason