How do I subscribe to an Angular Observable that emits an error, and what's the best practice for handling that error?

Subscribe using the standard `subscribe(value => ..., error => ..., complete => ...)` pattern. Within the `error` callback, log the error, display a user-friendly message, and potentially attempt recovery (e.g., retry). Always handle errors gracefully to prevent application crashes and provide a good user experience. Consider using a centralized error handling service.