I have a series on BREED which has started covering the basics of retouching. I will be covering a host of topics at every stage of the process with a video for each part. The first one is all about cleaning the skin. It shows principals and techniques to get the best results, so no Frequency Separation or any ‘buzz’ techniques but the fundaments executed correctly. If you are just getting into retouching this a great basis to go from.
The link below is to the BREED web site, note that to watch this video you will need a membership.