If you are looking for more extensive and detailed information concerning a Linux subject, try reading one of the many Linux guides. These guides, available for a number of subjects, dwell on technical topics in more detail and at a more leisurely pace than a HOWTO. You can find copies of the following:
• “Advanced Bash-Scripting Guide,” by Mendel Cooper; a guide to shell scripting using
bash, available from http://tldp.org/LDP/abs/html/
• “LDP Author Guide,” by Mark F. Komarinski; how to write LDP documentation, available from www.tldp.org/LDP/LDP-Author-Guide/html/index.html
• “Linux Administration Made Easy,” by Steve Frampton, available from www.tldp.org/LDP/lame/LAME/linux-admin-made-easy/index.html
• “Linux from Scratch,” by ...