Go to the home page of this website. Go to the link for FAQs. It should be very informative.
Also, go to some job websites.
www.monster.com, www.computerjobs.com
You will need to learn shell scripting as well. Here are some good sites.
there are a few things that you will need to know as an admin in UNIX.
-- Get a LINUX OS that you can dual boot on your PC. Go to your local Barnes & Noble or Borders or some other bookstore. Buy either RedHat or Mandrake version of LINUX, they are 2 of the best. It should be fairly easy for you to load with your experience.
-- Get some programming experience, either through classes or self-study. Necessary languages are SED, AWK, & shell programming.
Here are some good programming sites.
http://www.whereisit.com/shellscript/index2.html
www.perl.com
http://oase-shareware.org/shell/
-- Get a few books to read. Namely "UNIX in an Nutshell", "Unix Hints and Hacks" by Kirk Waingrow (
www.ugu.com), "The AWK Programming Language" by Aho, Kernigan,Weinberger. Also look in the FAQ for this website for other books. You will also need to get platform specific books as well.
-- Explore the web for good sites. Here are a few:
www.unixreview.com
www.ugu.com
www.sysadminmag.com ( has a cool CD of the last 10 years of magazine! Retails for $55)
www.unixguide.net
That should get you going.