With most STEM you're getting the API reference with no useful sample code or applications. Some people love the abstractions as puzzles. I was fine with calcu

With most STEM you're getting the API reference with no useful sample code or applications. Some people love the abstractions as puzzles. I was fine with calculus and matrix algebra at that level, but I was doing an EE course and the gap between abstraction and real world problems was not huge. But I had a mental block at school about the moment of inertia, because I had no idea what it was for. At some point the penny dropped and I worked out that it was basically the m in F=ma but for spinny things. Until that happened it was a mess of confusing diagrams with no obvious meaning or application, in an uncanny valley between pure abstraction and physical relevance. After it happened it became much easier to do the math.