Renaming layers
As you add layers to an image, you may find it convenient to rename them so that they are easy to identify on the Layers palette.
  To rename a layer
Edit tab 
1	On the Layers palette, click the layer you want to rename, pause a moment, and click again.
The name appears highlighted in a box.
2	Type the new name in the box, and press Enter.
You can also rename a layer by double-clicking the layer to display the Layer Properties dialog box and typing a new name in the Name box.