There were really only two gestures you had to learn: swipe up to go home, and down for settings, and these are fundamental to using the device (so very hard to

There were really only two gestures you had to learn: swipe up to go home, and down for settings, and these are fundamental to using the device (so very hard to forget). Pretty much everything else came naturally. On the home screen, swiping down gave you the system quick settings, and in an app it gave you the app's settings, so the two-finger gesture was just a power-user shortcut to the system quick settings while in an app. Swipe left to go back was very discoverable, and worked differently than iOS or Android, because the entire OS was built around the idea of stacks of pages. Swiping left was just pulling a page off the stack (fluidly animated and cancellable, and you could start anywhere on the screen). There was also a back button on the left-side of the toolbar that you could tap to do the same thing. Swipe up and to the right to go to the notifications Hub was also discoverable. The Hub was the left-most page on the home screen, so "up-right" simply combined the gestures into one fluid gesture; it was also totally optional.