If this book were written in hieroglyphics or Greek, it would be easier to understand, at least if you're not in at least your third year of physics or electrical engineering. I purchased this book after reading the other review and felt the need to add my opinion.

This is one of the finest books on E&M. Uses SI units, ... units cause much confusion in E&M, this book was one of the first to use SI units. As most introductory Calculus based courses now use SI units this is a good second course. Very good example using the "method of images," a topic that confused me my first time through. I had a Physics prof. that gave me good advice at this point, ... I am a good, not a gifted science student, my prof. had the modesty to tell me to move on, ... "nobody understands Physics with one reading, ... or even two, sometimes it takes years, or even a lifetime."
This book reads well and treats a few difficult topics with the simplest examples possible. You need only basic calculus and desire, and possibly more than one reading. I stick this book in my back pocket, just in case a little insight comes my way.

This is a very good book to follow the study of, say, Haliday. Slater was, in writing it, worried about teaching methods of theoretical physics, as well as of electromagnetism. The text is brief and to the point, with the elegance typical of the master Slater was. Maybe the strongest point, however, are the exercises. These are the best you will find in any book on EM.