I had a similar experience in law school in one of my tax classes. I hit a couple things where I could just not get what the tax code, the IRS regulations, or my textbook were trying to tell me.

I went to the university bookstore and found the textbook section for the university's undergraduate business degree programs, and bought the textbook for an accounting class.

Seeing the coverage of those tax areas from the accounting point of view cleared up what was going on, and then I understood what was going on in the code and regulations.