This time I would like to recommend a great source of information for all my readers who like to use CLI applications on their lightweight Linux installations. As I have pointed out earlier, if you try to use Linux on a very old computer, you have to use some of your own brain power to compensate for the lack of a fast CPU and lots of RAM.
Gareth Anderson has written an useful summary of command line GNU/Linux applications. It is organized thematically, so that you can easily find the most useful tools for e.g. controlling processes and services, manipulating text files or working with the file system.
Michael Stutz's The Linux Cookbook: Tips and Techniques for Everyday Use is another good source of information with similar topics. It is a bit old (written in 2001), but the CLI tools don't change as fast as KDE and GNOME applications!
Both of the ebooks are highly recommended reading for all Linux newbies who are not afraid of command line!