Ask HN: What are your greatest method for learning coding?

what if?

Any kind of thing that you can apply to your personal life, or a family member or friend. Something you care enough about that you'll get excited of doing it.

Off the top of my head, a tool for measuring your favorite sport or activity, for example (say, a website that sends you info about your team's schedule or scores).

Or something for your schedule. Or a weight tracker. Something to organize a collection (music, movies, whatever).