Dear editor,
This may be interesting, please feel free to post.
Cheers,
Jeff

IBM developerWorks tutorial:  LPI certification 101 exam prep, Part 1:
Linux fundamentals
IBM developerWorks released the first of a series of four tutorials on LPI
certification. This one goes over bash; standard Linux commands like ls,
cp, and mv; Linux's permission and ownership model; and some more. It looks
like a really good reference for people who want to refresh their skills or
check up on the fundamentals.
http://www-105.ibm.com/developerworks/education.nsf/linux-onlinecourse-bytitle/4AAA4E689F774DBC86256B4500645075?open&l=007,t=grl,p=lpi1