I wish to fix a problem on my Ubuntu desktop. How do I find someone who would fix it for me?
( either remotely or on-site)
How Do I find such a person?
Most of the Linux sites are to help you how to solve the problem on your own. I don’t really have time for it.
You might check out your local university’s students’ job exchange. Surely, some computer science student will be able to help you.
My university does not have a job exchange site. Neither Ubuntu nor Linux is that popular in my country
Can you please tell us, what is actual problem, in short. If possible.
That may be true, however if you are on a university in the capital, then you’ll probably find someone who will fix it for a couple of rupees.
Just explain the problem to us, we’ll try to solve it for you 
We’re here to solve people’s problems.
I’d say, we are here to help people help themselves. 
That was superb 