[Doxin]

> How are you supposed to know that win+left will move the window to the side?

You're not. Shortcuts are a power user thing. If you want to move the window you drag it.

> There are quite a lot of "have to know" things in other OSs, too.

Oh definitely. It just seems to me that OSX is exceptionally bad at telegraphing these things. On windows and even linux most all features have something visible to clue you in to their existence. OSX seems to do its best to hide things instead.