i need urgent help !!!!!!!!!!!!!!!!!!!!!!!

 Hi...

I don't know about any e-book but i would suggest you to buy padhukas for practicals as each and every topic is explained in simple and lucid language and enough sums for practice are also available in this book.

I am also using the same book and according to me it is very good from exam point of view.

Bye..............

i think u shud go for the following authors:

accounts:  sonu gupta(without answers book)

tax: m.k. gupta

costing/fm: ashish kalra