You can read a significant portion of the third edition for free on Google Books . Book Overview

: You can view a significant portion of the book, including the front cover and various chapters, through the Google Books Preview.

V. Rajaraman's Introduction to Information Technology is a cornerstone textbook for undergraduate students, emphasizing the fundamental "science" of IT rather than just routine operations. Amazon.com Key Overview & Access

Older editions (pre-2005) sometimes fall into "out-of-print" status. The Internet Archive ( archive.org ) occasionally hosts legally scanned versions of such textbooks for controlled digital lending. A search for "Rajaraman information technology" on Archive.org may yield a borrowable copy.