Drop The Needle Practice Exam

1. Go to the Google Cloud Console and create (or select) a project.
2. Enable the YouTube Data API v3 under "APIs & Services → Library".
3. Create credentials → API key.
4. Click the new key and restrict it: under "Application restrictions" choose Websites and add your GitHub Pages URL. Under "API restrictions" limit it to YouTube Data API v3 only.

Restricting the key matters — it lives in your browser and is visible to anyone who opens dev tools.