"I was just searching around two or three nights ago and found a GTK Programming tutorial for c/c++ for GUI stuff. Is this worth it, or should I find something better maybe something a little more well rounded or even universal as far as gnome and kde go? "
Almost all GUI programs are written using either GTK or Qt. The main difference between them is the licences that they are issued under. I think that GTK has the better licensing arrangement. You will not find "something a little more well rounded or even universal as far as gnome and kde go? " I highly recommend Gtk.
Be prepared. Create a LifeBoat CD.