In addition to the standard Windows and Mac keyboard shortcuts for Cut ( Windows [Ctrl]-[X], Mac [ z ]-[X]), Copy ( Windows [Ctrl]-[C], Mac [ z ]-[C]), and Paste ( Windows [Ctrl]-[V], Mac [ z ]-[V]), Photoshop offers further keyboard shortcuts on both platforms.
Windows [F2], Mac [F2]
Cut
Windows [F3], Mac [F3]
Copy
Windows [F4], Mac [F4]
Paste
Windows [Ctrl]-[Shift]-[V], Mac [ z ]-[Shift]-[V]
Paste the cut or copied item inside another selection
Select the destination for the Paste Into operation before you press this shortcut or choose Edit Paste Into.
Windows [Ctrl]-[Shift]-[C], Mac [ z ]-[Shift]-[C]
Create a merged copy of the visible layers in the selection