Yeah, if you have never purchased one of these videos, this is an excellent one to get; however, it only covers a female model with close to perfect skin, so the breadth of examples is confined to a single one; but you can take these techniques to all sorts of other people and even landscape and other types of photography.
Due to the nature of the photography, some photographers that create these retouching DVDs cover other aspects such as retouching grandparents, men, glare in eyeglasses, etc....
You may want to check out this link to Jane Conner Ziser's video from software cinema (I have this one as well):
http://www.software-cinema.com/produ...uct_details/95
You will find that good retouching is based on keeping the original skin texture and tones to enhance, not fully change the person so that they are improved, not changed so they can tell. This is an art, but I find that the more I take photos and do a little to each one, I get better and find some of the tools in photoshop such as the liquify and warp tools which are extremely powerful are not so formidable after using them here and there. After a while, you will find snapshots can be highly improved with one or two enhancements with a careful hand and the right tool.
BTW, I assume you have a wacom tablet for doing this, else, your precision may suffer a bit and since you will be working at the 1 to 2 pixel sized brush level often, you need good precision the tablet provides.
Lastly, I worked on a photo for my neighbor of his wife that was a quicky after taking photos of their 1 year old son. The photo required major cropping to get the look he wanted. After I was done, they didn't know I did anything, but I have a feeling they always like my work, so really didn't look for any changes and simply liked the photo; however, when you flip in Adobe Lightroom in compare mode back and forth, you can see the enhancements really dressed her up nicely, but without changing what makes her, "her."