How may I be able to cut out pictures of objects from a picture and place that object in another pic?

I want to know how i can cut around objects(like a cut out) and then place them in another picture.How may I be able to cut out pictures of objects from a picture and place that object in another pic?
go to google search GIMP photo editor. download either a trial or the actual thing and you can use it to cut out stuff around a picture