Hello. I am currently reading on electromagnetism in university. However, I feel that I sometimes get lost in the the math in an otherwise excellent book (Field and Wave Electromagnetics by David K. Cheng), so I would like to ask, if somebody knows a good, steady resource for understanding the different subjects in electromagnetism for mathematically lesser beings like me, since I have a hard time understanding many of the subjects intuitively. Khan Academy has been excellent for mathematics, but I feel there is something missing when it comes to electromagnetism. Thank you.