http://www.youtube.com/watch?v=7JnzYTHaCAw&feature=youtu.be Elysium Eilde describes how to remove grid lines that appear in large photos.
http://www.youtube.com/watch?v=tZlFhly-7Zc&feature=youtu.be Ryker Beck explains how to smooth skin.
http://www.youtube.com/watch?v=eJSjz7jaY5E&feature=fvwrel Katey Coppola explains how to draw shadows on the body.
http://www.youtube.com/watch?v=1kOXqXh9Gdw Elysium Eilde explains how to create an adjustment layer for highlights
http://www.youtube.com/watch?v=_J3lB5gv49g Elysium Eilde shows how to work with curves in photoshop to get a little boost of color
http://www.youtube.com/watch?v=BkNm4FUXq9U Elysium Eilde (she’s awesome!) shows more techniques with curves and masks to adjust colors
http://www.photoshopessentials.com/basics/moving-photos-between-documents/ Moving photos between documents using photoshop
http://www.photoshopessentials.com/basics/layers/layer-masks/ Understanding layer masks