- Keir Thomas, Ubuntu Pocket Guide. Well-written and easy to read, this is an extremely popular and best introduction to Ubuntu for beginners. The PDF download of is free. The print edition is available for purchase from Amazon.com
- Ubuntu Newbie Guide [hosted on Web Upd8] (An excellent collection of information, tips, shortcuts for beginners.)
- Stefan Neagu, A Newbie's Initiation to Linux (A short but easy to read introduction. Provides a good overview and detailed instructions for installing Ubuntu.)
(b) SUSE Linux
- Scott Morris, The Easiest Linux Guide You'll Ever Read: An Introduction to Linux for Windows users (see also his updates on his blog: http://www.suseblog.com/).