Selecting Just One Object On A Layer
If you have multiple objects on the same layer (like a few words of type that have already been rasterized) and you want to select just one item on that layer (for example, you want to put a selection around one letter so you can move it independently of the rest of the letters), here's how: Use any selection tool to create a loose selection around the object. Hold the Command key (PC: Control key), and then press the Up Arrow key once and the Down Arrow key once. The entire object will become perfectly selected without disturbing anything else on the layer. Now you can move it, edit it, or tweak it separately because it is a "floating selection."