from your very basic 'description' it sounds like you want to scale a layer.
find the scale tool on the Toolbox. hovering over the icons will bring up text.
it should say "Scale Tool: Scale the layer, selection, or Path"
click on that tool making sure your layer is also selcted (the one you want to scale) and go for it. I suggest your click on "keep aspect" in the tookbox unless you want to distort the scalling operation.
"No one man can terrorize a whole nation unless we are all his accomplices." - Edward R. Murrow
What do you mean by "resize"? As in size as in MB or "resize" as in dimensions?
from your very basic 'description' it sounds like you want to scale a layer.
find the scale tool on the Toolbox. hovering over the icons will bring up text.
it should say "Scale Tool: Scale the layer, selection, or Path"
click on that tool making sure your layer is also selcted (the one you want to scale) and go for it. I suggest your click on "keep aspect" in the tookbox unless you want to distort the scalling operation.
"No one man can terrorize a whole nation unless we are all his accomplices." - Edward R. Murrow
Click on Image on the toolbar and then select "Scale Image" to resize the whole picture.
Good luck!
http://www.gimp.org/tutorials/
I made this half-pony, half-monkey monster to please you.