Let's say you've devoured just about everything you can find on the Apple Watch but are still craving more. That's perfectly natural. Well, Cupertino has a guided tour of the wearable that should help answer any remaining questions you might have. For now there are four separate videos with a disembodied voice talking through the different features (messages, general functionality, digital touch and faces), showing how they work and generally being pretty informative. The digital crown, for example, is apparently as integral to Watch as the clickwheel was to the original iPod. Huh.