Where can I download the Apple Watch User Guide?

The Apple Watch only comes with a quick start guide in the box, but Watch owners can get the full guide online at http://help.apple.com/watch.

The online Apple Watch Guide features instructions on how to set up your Apple Watch and pair it with your iPhone, plus other helpful tips like how to use the stock apps and how to customize your Watch face. The guide also includes important safety and handling information for Watch owners.