I am still having real trouble. I have watched both videos that Lee D recommended and have several problems.
1 I am having difficulty stopping the selection tool spreading all over the rest of the photograph (the one that I sent earlier)
2 Even when I think I have got it I dont have the same mask icon on the right hand side of my screen, as is shown in the "cutting out' video.
I try to use a similar looking button in the top middle, but nothing happens.
3 The cutting out video suggests i export the end result as a png or a tiff. The people who I am trying to send the results to, have asked for a jpeg.
ARRRRHHHHGGGHHHHH