You can use the selection tool to make copies of your selection quickly and easily. My standard practice for copying a selection is to select it then copy (Ctrl+C), paste (Ctrl+V). However, I just learned a neat little trick today.
1. Open an image
2. Pick a selection tool (marquee, lasso etc)
3. Make a selection To cut away the selection
(with the selection tool still active), hold the control key and drag your selection. This will remove (cut) the selection from the original. To make a copy of your selection and leave the original in place
, click on the move tool then hold the alt key and drag your selection. To make multiple copies
(and I found this to be very neat), click on the move tool, then while holding the alt key drag the copy and click and release your mouse button. Each time you drag the copy and release your mouse button a copy is made. Remember to keep the alt key pressed.
Got some more handy uses or tips for the selection tool? Feel free to add them to this thread!