In fact, your major has little to do with learning German, unless you are studying in Germany, because the German postgraduate major must be the same as the undergraduate course.

Although you are not going to take a foreign language class, I suggest you learn a language from your teacher when you are just getting started. Not only can you have a clear understanding of the whole language, but you can also learn some learning methods, which is of great help to self-study in the future.

After learning basic German for a while, I found that the articles in it were too boring and old-fashioned.

Later, I studied the new standard German course. I know this book is not used by many people, but I still have a good impression on the textbooks compiled by foreigners themselves, because I pay more attention to practicality, communication and interest. Of course, if you are very concerned about grammar, I recommend "Standard German Grammar Interpretation and Practice", which is really the level of a book of gods, but it can only be used after a certain foundation. I'm not sure about other foreigners' self-editing, such as "Travel around Germany".

I hope it will help your German study:))