Just don't. Half of the class gave up on going to his lectures because they became pointless. He's a great person but a pretty bad teacher. I felt good about the homeworks and then got absolutely destroyed by the midterm. He already had a pretty generous grading scheme set up from the beginning but he still had to curve a LOT at the end because the averages for the exams were ~50% (a C- in his initial grading setup). It was difficult to follow his lectures as he'd jump around a lot and get caught up on simple mistakes. The exams were not like the homework, and if you didn't study all of Griffiths you were screwed.

This professor sucks. He starts on a topic and gets easily flustered by a mistake he makes on the board which derails the entire lecture. He MOSTLY follows Griffiths but copied the occasional Feynman lecture or 2 so make sure to reference that. Some lectures he actually provided derivations that were not in either resource which were appreciated.

I basically gave up on attending lecture at all and used Griffiths and Feynman which was sufficient. Homework is almost always out of the book and exams are super fucking easy. Make sure to go carefully through the derivations on some stuff. I distinctly remember on the final you basically had to derive the radiation for a charged particle.