Documentation:

• Tutorials from Little Unix Programmers Group (LUPG)'s Little Site
• Unix Tutorials
• Unix Serial Port Resources
• Index of /CC/Courses
• Unix Guru Universe
• UNIXhelp home page
• The WebTechniques Perl Columns- monthly column for Web Techniques magazine (by Randal L. Schwartz )

Sources:

• Great Unix Src Software Archive

Columns:

• SunWorld's Unix 101 by Mo Budlong
• The Unix Review Perl Columns - bi-monthly column for Unix Review magazine (by Randal L. Schwartz)
• UNIX Review