Want to code your own scripts and apps using AI? Here's some guidance to get you started off on the right foot.

If you were to dig deep below New York City’s streets, past the subway tunnels, you might expect to find thick layers of schist, gneiss and marble.

Jeff Horwitz is a former technology reporter for The Wall Street Journal in San Francisco, where he covered Meta and social-media platforms. He is the author of “Broken Code: Inside Facebook and ...