During the event, Apple showed several videos, all of which have now been uploaded to Apple's YouTube channel. From the opening TV credits video to the ending video with Oprah, everything announced is summed up in these videos.
Of all of the services that Apple announced today, the only one that's available now is Apple News+. You can get Apple News+ after updating to iOS 12.2, which was just recently released. The other services will be available later this year.
The full livestream of Apple's event today can also be re-watched on the Apple Events website, and Apple will likely upload a version to YouTube in the near future.