www.pas.rochester.edu/~pavone/particle-www/telescopes/Comput...

A single web page showing a lot of the basic Linux commands and easy to understand explanations.

liveinformant.com/software/ylmf-ubuntu-english-chinese/

How to Install YLMF Linux in English Instead of Chinese

linuxcommand.org/learning_the_shell.php

Learn the Linux command line. Exactly what it says.