It seems to be available for the same price or even cheaper on Amazon... http://www.amazon.com/s/ref=nb_ss_b?url=search-alias%3Dstripbooks&field-keywords=Basics+Digital+Computers+murphy&x=0&y=0 -- Marcin Wichary Sr. user experience designer, Google Graphical User Interface gallery >> www.guidebookgallery.org