GUI programming

CS student here. Almost everything we've learned so far has been data structures and theoretical algorithms stuff. I want to actually make something with a user interface instead of a terminal.
What books would give a nice introduction to GUI programming?

>>39
Paredit already uses indentation as a visual cue and it's not enough.  Prefix notation sometimes just doesn't cut it.  I'm certainly not a fan of Perl's operator hell, but it's nice to have infix operators for certain things.