Thank you, dolik.rce.
Yes, I called my package 'g' and copied and pasted the code into 'g'.
Due to your advice I chose GUI2 from the provided tutorial list and saw 2 errors. I just included "/usr/lib/i386-linux-gnu/glib-2.0/include" and "/usr/include/gdk-pixbuf-2.0" into the include list and the code was able to be executed so I could see the window!