Beth,
If the paint is wet, the easiest thing is to just paint the complementary color into the wet paint. They mix together, and you can see immediately if you need to make further adjustments. If the paint is dry, you can just mix the original color (on your palette) with the complementary color, and reapply that new color. Or you can repaint the original color, and then paint the complementary color into the newly wet painted.
You needn't bother with glazes to make this direct kind of color adjustment, although you could.
As far as my videos are concerned, I put them together so there is a ton of information for all levels of student. As you watch them, the information you are ready for should jump out at you. I expect that you should be able to watch them every year and continue to pick up new insights as you are ready for new concepts.
The videos are based on my 7-day workshops, so certainly you could start a painting and paint along using the videos as a template. I know a number of students who have done that. Do the drawing, paint the lit areas in cad yellow, the shadow areas in dioxazine purple. Do the three value massing, color correction, etc.
The Artist Magazine will be publishing an article on my method of painting in their February 2003 issue. There's a step by step, which should also help to explain the method.
One last thing, I just posted at
http://forum.portraitartist.com/show...?threadid=1857
on three value massing.
Everything I do segues together. It all kind of weaves itself into a package. So even if it may seem at times to be going in different directions, it all knits back together in the end.
Peggy