On your palletes to the right, click on the "Layers" pallete. If you don't have the Layers pallete showing, go to "Window>Show Layers", and your layers pallete will appear. Now, on the top layer of your layers pallete there is an eyeball, followed to the right of it by a paint brush. Each layer below it has the same boxes, but they are empty. You can click in the box of the layer that you want to link together, and a "chain" will appear. You layer is now linked. Click the chain to unlink the layer. To link them all together, simply click and hold the top layer that's not linked (the first layer with the empty box) and drag your mouse down to the bottom layer (still in the same box) and release the click. Now, all your layers are locked, and may be moved together at the same time using the Move tool. I'll post a picture on where the boxes are located. Please let me know if there is anything else.
Hope it helps!
War produces veterans, wounded both physically and mentally. They have sacrificed for us.....and it is now our job to help these veterans, as they have already helped us in ways we will never know, in ways that we cannot fathom, and in ways that we take granted every day.