The second video here:
http://www.gimp-forum.net/Thread-Gimp-se...-beginners
but depending on complexity, a really easy way is using the quick mask facility and painting a selection out.
an example https://www.gimp.org/tutorials/Quickmask/
http://www.gimp-forum.net/Thread-Gimp-se...-beginners
but depending on complexity, a really easy way is using the quick mask facility and painting a selection out.
an example https://www.gimp.org/tutorials/Quickmask/