* Ctrl + Alt + left/right/up/down to switch workspaces
* Ctrl + Alt + Shift + left/right/up/down to move the current window to a different workspace
* Alt + Left mouse button to drag windows
* Alt + Middle mouse button to resize windows
* Drag a window to the left or right edge to resize it to that half of the screen.
No idea how much of this is Gnome/remains in 17.10. Or how easy it is to set up. I guess I need to give it a try.