I vote for a little webby something. Get the lowest-level web framework you can find for the language, and then make a hello world. You're bound to learn string

I vote for a little webby something. Get the lowest-level web framework you can find for the language, and then make a hello world. You're bound to learn strings, functions, processes and types, at the very minimum, and a web-based something is also a very easy platform from which to expand incrementally into new territory.