Amazing user interface. Seriously inspiring stuff.

Like you, I've built some C++ analytics infrastructure that I would have loved to have in an earlier corporate gig. But unlike you, I have no idea how to build a UI that people will want to use. I do everything at the terminal.

Can you recommend the best way to get going with UI development? Like, what tools should I use, what should I read? Is it even possible to get started with ~1week investment in learning?