What should I study online?

Currently have too much time on my hands so I was thinking of taking an online course but not sure what to take.

I am looking for something that is not a long term commitment that is more or less guaranteed to lead to a job.

Ideally something to do w/ programming or computers but open to other suggestions.

Ideally I would like something that is more gig orientated (think a month or two) as opposed to a 9 to 5 job.

Any help would be greatly appreciated.

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