Greetings. Would anyone care to suggest CHEAP courses--for credit, non-credit, personal development, whatever--applicable to Windows and Linux? While you're welcome to supply whatever links you think might be helpful to future readers of this thread, I would personally be interested in non-simplistic intro to Linux courses, Windows courses dealing with the more exotic aspects of Windows (networking, administration, etc.), and courses on application/system programming for both operating systems. Of course, by programming, I am referring to courses on programming for the operating system (e.g., APIs, etc.), not about courses on programming languages or computer science, but feel free to include those too if you wish. I am particularly partial to open enrollment courses NOT using one of those ghastly Blackboard(tm) or Blackboard(tm) like systems. Were the course to originate from outside the US, e.g. a UNISA short course, that would be fine, too. Thanks in advance.