hica is a functional, expression-based programming language, everything is an expression and immutable by default. Its goal is to make programming very approachable for beginners (and veterans alike). You learn by doing small programs, then dive deeper on a thing you really want to build.

This is a guide on functional programming which covers immutability, higher-order functions, pipelines, and more, all with runnable examples.

If that is to theoretical there is https://www.hica.dev/docs/hica-for-beginners/ that walks through functions, pattern matching, and lists by building real programs.

Happy to answer questions about the design decisions, the implementation or how to get started.