I am a self taught retoucher as well as photographer. I am looking to expand my portfolio beyond my own photography and looking to work on fashion, beauty, glamour, commercial and more. Rates available upon request.
Also I'm sorry but I'm not a teacher, there are many great threads online about retouching. I can't say much about any books or videos since I've never really opened one or watched one, so I don't have any recommendations other than trial and error and try again. Play around with the settings, get a feel for what everything does and how it works.
Wacom = Love
Editing is NOT a race, it's producing a quality end result whether it take 2 hours or 8.