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.