In order to succeed in an electrodynamics graduate class, it is important to have a strong foundation in mathematics, particularly vector calculus and differential equations. A working knowledge of classical mechanics and basic electricity and magnetism is also recommended.
It is important to review and solidify your understanding of the prerequisite topics mentioned above before the class begins. You can also familiarize yourself with the course material and textbook, and start practicing problems to strengthen your problem-solving skills.
Aside from your class textbook, there are many additional resources available such as online lecture notes, problem sets, and practice exams. It may also be helpful to join study groups or seek guidance from professors or tutors.
Electrodynamics can be a challenging subject, so it is important to stay organized and manage your time effectively. Make a study schedule and stick to it, prioritize your assignments and readings, and seek help if you are struggling with any concepts.
Aside from staying on top of the course material and seeking help when needed, it is important to actively participate in class discussions and ask questions. Practice problem-solving regularly, and don't be afraid to make mistakes - learning from them is an important part of the process. Lastly, make sure to take care of your mental and physical health to ensure you are in the best mindset for learning.