Depends on what you mean about designing images? Do you mean make photographs look better? Or do you want to create logos, your own drawings (cartoons, comics, painting, etc). You might start out by searching online for tutorials about what is you're interested in doing: "__________ with GIMP". Put whatever it is your interested in, in the blank, when searching. There are thousands of video tutorials out there that show users how to use GIMP.
Designing images
Depends on what you mean about designing images? Do you mean make photographs look better? Or do you want to create logos, your own drawings (cartoons, comics, painting, etc). You might start out by searching online for tutorials about what is you're interested in doing: "__________ with GIMP". Put whatever it is your interested in, in the blank, when searching. There are thousands of video tutorials out there that show users how to use GIMP.
http://www.youtube.com/watch?v=kB2dQcpTZHE&feature=player_embedded
Other help:
http://registry.gimp.org/node/25574