Ok, I'm going to sound dumb here, but I can't figure this out for some reason.
I opened 2 images I have. I want to put one INSIDE another, I.E. on top of the other image. I can't get the image out of the little window it opens in, or something.
Select all in 1st image > copy > paste to 2nd or
drag and drop layer from one to the other
Start reading the fine manual and experimenting....
Sorry... I figured it out... I locked my all my layers somehow (<<<idiot)