It sure would help if you could tell me the basics. I want to transpose a head from one picture to another picture. Thanking you in advance from Cape Breton Island in Nova Scotia. However, what I'll do is give you the fundimental concepts, and pointers to the necessary detail.
Layers are difficult for the uninitiated, there's no doubt about that.
But once you master them, you've got a powerful tool to use forever. Here's what you'll be doing to accomplish the head swap. Now let's put the images together, and view them through layers so we can actually see how the images will marry. This is an important step. So take that tool and go around the new head you want to copy.