newbie-gui lib for c quickie

Hi again, I'm trying to learn c. Soon i'll be deciding which gui library to use. I know there exists qt, gtk, and tk. AFAIK, qt is for kde, which i generally use.But any suggestions are welcome. I guess i'll need a good book also. Since there are no books about qt or gtk programming here in Turkey, it'll be difficult for me to choose. So i'll get your help again, to order a book from amazon. Thanks in advance..