This command allows you to select a specified color or range of colors. If
you want to replace a selection, remember to deselect all before applying the command.
A layer mask is used to hide portions of a layer and reveal portions of whatever layer is below it. You can modify the mask by using the brush tool and painting in either black or white.
I would just like to say this video has taught me a lot.I work with Elements 8 quite alot but I find that I cant do everything in elements so I have t revert back adode 7 to do some things and this video is helpfull.