Jay/AZAD, if you're reading TechRepublic, you're on the right path. TR has a wealth of resources and it will help keep you headed in the right direction. I think it is so valuable that I just added TechRepublic membership to my resume.
At my last job, we were able to modify my schedule to allow me to go to a UNIX class at a local junior college. I didn't use the tuition reimbursement program b/c the class cost less than $100 (including books!), but your company may even pay for your class. After I finished, I put together a brief summary and taught my boss and my colleagues a few tricks and basic commands. (Note to UNIX instructors: save the UNIX talk and write commands until the end of class.)
At my current job, I volunteer for special projects with new technologies. We developed a wireless software a couple years back, so I've gotten a lot of hands on experience. Also, studying wireless publications benefits both me and my company.
During lunch or after hours, I've also passed some free Brainbench certs. Good luck!