I love fixing and maintaining computers.  So much so that I work as a computer repair technician.
Oh wow, that is what my father did, does it take a lot of schooling or training
They do have certificates and degrees in computer repair, but there are a lot of people that don't have much formalized training.
I see, they just work from their own self businesses. Do they make a lot of moeny
I think that the income can vary quite a bit.  Novice technicians do basic repairs, but experienced technicians can specialize in data recover, system administration, or information systems.
That makes sense, I bet they are able to work in a variety of different places
who have little formal training in the field like private sectors 
Private sector computer repair technicians can work in corporate information technology departments, central service centers or in retail computer sales environments. Public sector computer repair technicians might work in the military, national security or law enforcement communities, health or public safety field, or an educational institution. Despite the vast variety of work environments, all computer repair technicians perform similar physical and investigative processes, including technical support and often customer service. Experienced computer repair technicians might specialize in fields such
people can do dance, others can do urban or pop, but Nadir does it all and understand what makes a hit on every level". Lopez and Gaga did not work on the song together in person. According to Lopez, RedOne brought Gaga into the process because they have worked together a lot in the past. She cited the process as being "kind of cool" and that Gaga is a "great songwriter: I don't just love her lyrics, but also her melodies".
Composition.