I know how to solve math problems, whether it’s calculus, algebra, sequences and series, you get my point. (Where I live, they focus more on teaching how to solve problems rather than the underlying concepts.) But I don’t fully understand how these things work, like why calculus was created or its significance, the core roots of it all.
I have 2-3 months, and I’m thinking of redoing the math I’ve learned from the basics and trying to bridging the gaps. Just looking for suggestions on where to start and any good resources.