Electromagnetism: Their Birth, Life, Death

I started with minimal knowledge in vector calculus and was very much discouraged by the fact that I was unable to evaluate even a naive-looking integral (that comes with a reciprocal of some radical). This book was THE ONLY BOOK that taught me how to do that. Now, I learn very nice things about fields (such as there exists no electric field inside a hollow shell of a conducting body) and mathematically how such is possible! Overall, I must say, this book is different.