Win+L: Lock your user account.

Win+Ctrl+D: Add a virtual desktop.

Win+Ctrl+[Left or Right]: Switch to the virtual desktop on the left or right.

Alt+Tab: Switch to the last used window.

Ctrl+C: Copy selected content.

Ctrl+V: Paste copied content.

Ctrl+Z: Undo the previous action.

Ctrl+Y: Redo the previous action.

Win+Arrows: Shift your opened app to the orientation of the arrows.