Photoshop Move Tool
The move tool allows you to move a selection or entire layer by dragging it with your mouse or using your keyboard arrows keys. The move tool is located at the top right of the Photoshop Toolbox.
When the move tool is selected, click and drag anywhere in the image. By default, if an area is selected the selection will be moved, otherwise the whole layer will be moved. See the options bar for more options.
Alternatively, use your arrow keys to move the selection or layer in small increments. Hold down the Shift key to move in larger increments.
Note: You can activate the move tool when another tool is selected by holding down the Ctrl key (Windows) or Command key (Mac OS).