good advise: learn more then UNIX, but take its lessons with you.
With suitable skills, jobs related to engineering software and administering systems / networks are easily reachable. Getting paid for it is a tad harder without degree's, certifications, and work experience in the field.
I've found Wikipedia, Google, and Reading The Fine Manuals to be an excellent way of learning such computer skills. The important thing is learn them well, and always grow. Read it, Write it, Do It. If system admin like stuff is what interests you most, learn the ins and outs of doing it on your boxes, then find ways to improve it. If you learn well from books, hit up a library or the bookstores if need be. You might be able to find a few used course books on Amazon that could help with specific problem domains as well (like *nix networking)
In 3 years I went from being a regular Windows user, to reading kernel code because, I wanted to be better equipped to help people here (and I was curious...
). You can go far if you will forge the path.
just another computer geek