Hi, I am a math major, currently in my 3rd year of undergraduate studies, majoring in measure theory / probability / mathematical statistics. I am in the dubious situation that I will be taking a course on QM while having so far only studied classical mechanics (i.e. all chapters on classical mechanics in the book by Young and Freedman, including waves). The QM course will begin two months from now, so I have some time to prepare. Since I will later be taking electromagnetism (following the book by Griffiths), Im considering two ways of preparing: 1. the QM course will be based on the QM book by Griffiths, up to chapter 5. One option for preparation would be that I read this book in advance. 2. Or I might read Griffiths´ electrodynamics before taking QM, in order to achieve "maturity" in physics. Do you think that option 2 would be a big advantage, or perhaps even necessary condition, to studying QM? Officially, EM is not a prerequisite for taking the QM-course. I would prefer to do option 1, due to lack of time. I very much hope to hear from you. Many thanks.