All you do is use your selection tool and go around the shape/letter you want to use. Then you drag it onto your page or a new layer.
I use PS and I use the magic lasso tool, hold down the shift, and I can select a few letters at a time. Once they are on my page, I select each one separately, copy it to its own later, and then just delete the layer that has a few letters on it.
Hope this helps