pick up a functional programming language and learn its [concept] library, it's a great way to experiment with mathematical concepts while also having something

pick up a functional programming language and learn its [concept] library, it's a great way to experiment with mathematical concepts while also having something concrete to play with. I suggest Haskell. P.S. challenge yourself to solve problems with as few lines as possible, that way you're forced to find better (combinations of) abstractions