How do you quickly get up to speed on new technical topics?

As I dig into generative AI and how I can integrate it into apps that I build, I'm looking for resources that can help me learn and learn quickly. I have known for a long time that I learn by doing, by getting my hands (literally and figuratively) dirty, trying things out, having something to demo or play with at the end. I'm curious about what approaches you have found most effective for quickly getting up to speed on new technical topics.

Share your tips and style of learning in the comments below. Maybe it's video tutorials, maybe it's blog posts, maybe you prefer in-person courses, maybe you even have some helpful resources for popular technical topics like generative AI that have helped you and could help the next person!