Get one inch margins all around.

comprehensive-gpl-guide.tex

@@ -4,6 +4,10 @@
 \documentclass[10pt, letterpaper]{book}
 \usepackage{enumerate}
 \usepackage[dvips]{graphicx}
+\usepackage[verbose, twoside, dvips,
+              paperwidth=8.5in, paperheight=11in,
+              left=1in, right=1in, top=1.25in, bottom=.75in,
+           ]{geometry}
 
 \begin{document}
 \pagestyle{plain}