Really good resources for Linux

• Command line examples & reference
• http://linuxcommand.org/learning_the_shell.php
• http://www.cyberciti.biz/
• http://www.thegeekstuff.com/
• Server configuration, administration
• http://www.linuxhomenetworking.com/
• Everything
• http://www.tldp.org
• http://www.ftacademy.org/materials

     General not just Linux

• SSL
• http://www.sslshopper.com/why-ssl-the-purpose-of-using-ssl-certificates.html

     Older perhaps aged resources

•  LINUX:  Rute User's Tutorial and Exposition
• online:  http://rute.2038bug.com.
• download ebook: http://www.linux-books.us/gnoppix_0001.php