Today I had a look at R.D. Sharma published by Dhanpat Rai. Especially I had a look at indefinite integration and definite integration chapters.
The book has good explanation for various methods in various chapters. Examples are given method wise. This will facilitate understanding the methods.
But many persons write that TMH JEE Mathematics has problems of a more advanced nature and JEE candidates have to answer those questions to develop themselves into capable persons.
I have both the books and of course Dasgupta also to go through.