I am doing self study with JD Jackson's "Classical Electrodynamics". Since not enrolled anywhere this is all I am using. At lot of places in the book, I feel need for more detail. At times its just the maths that I dont understand. I do try to look at maths books for understanding something but at times the exercise takes a lot of time. Is there any good video lecture/Notes/Slides to go with this book?
I am assuming you have already read an undergraduate text (like Griffiths). You can try Modern Electrodynamics by Andrew Zangwill.