Here is a link to their current Unix catalog page;
http://www.netg.com/Catalog_cms/topi...p=6&c=10&s=246
The titles I got are no longer listed. From memory (meaning I have the subjects right but the exact wording may be slightly off) they were:
Intro to Unix
Unix - Intermediate Topics
Unix - Advanced Topics
Unix System Administration
Advanced Unix System Administration
TCP/IP Networking
Unix Shell Programming
They are general courses on Unix, not a specific flavor. I see in their current catalog that they have specific courses for Linux, Solaris, SCO, and HP/UX. I think what I got may be better if you're just starting out and want to get a good foundation instead of concentrating on one particular variety of Unix, but I guess that is a matter of opinion.
As far as Sun being the way to go, I agree to a point. I see as many job listings for Sun in my area as Linux, AIX and HPUX combined. However, knowing multiple Unix OSes is the best way to go, most medium to big companies will have more than one vendor in their datacenter.
A final note - if you're interested in Unix as a career path stick with it. You have to be smart and willing to always work hard and learn. But once you can get a job and some experience under your belt it can be a great career. Just always keep up on the technical side of things and don't let yourself fall behind. I have lots of friends who have been unemployed for a long time because their skillsets aren't as popular any more.