Learn and gain knowledge about managing Operating Systems (OS) like Unix/Linux/HP UX/Solaris/AIX and find lucrative jobs. Linux, HP UX, Solaris, AIX are all different flavours of Unix. You learn one of them and you can use that knowledge to manage any of those OSs. There is a large demand for people with Unix knowledge around the world. You don't need a degree to get those jobs and you also don't need to pay hefty fees to learn unix/linux.
Learn PowerBuilder and you can start developing GUI applications very fast. It is an easy and fast tool to learn. Better than competing Rapid Application Development (RAD) tools. Within a week you can start developing applications for your use or for clients. It has very strong Object Oriented Programming (OOPs) features which allow you to write much lesser code than Visual Studio and the likes. On top of that you can create generic template with all the code in place. For each screen just develop the screen and change it in the template. Application development is a song with PowerBuilder.
Learn Unix commands, Vi and find jobs as a Unix support engineer at hundreds of companies around the
world. There is lots of training material available on the internet. If you want to go deeper learn Shell programming and Administration commands too. Here are the links: