How to Rename and Copy a Layer in Photoshop CS6

Renaming and copying a layer

To add content to an image and simultaneously create a new layer for it, drag an
object or layer from one file into the image window of another file. Whether you
drag from the image window of the original file or from its Layers panel, only the
active layer is reproduced in the destination file.
You’ll drag the Beach.psd image onto the 04Working.psd file. Before you begin,
make sure that both the 04Working.psd and Beach.psd files are open, and that the
Beach.psd file is selected.
First, you’ll give Layer 1 a more descriptive name.
1  In the Layers panel, double-click the name Layer 1, type Beach, and then press
Enter or Return. Keep the layer selected.

2  Choose Window > Arrange > 2-Up Vertical. Photoshop displays both of the
open image files. Select the Beach.psd image so that it is the active file.
3  Select the Move tool ( ), and use it to drag the Beach.psd image onto the
04Working.psd image window.

The Beach layer now appears in the 04Working.psd file image window and its
Layers panel, between the Background and Pineapple layers. Photoshop always
adds new layers directly above the selected layer; you selected the Background 
layer earlier.

4  Close the Beach.psd file without saving changes to it.
5  Double-click the Mini Bridge tab to close the panel.