Ditch digger, retail cashier, stockboy, janitor, fast food cook, car wash attendant, bat boy, welfare queen.
An example of not completely skilled is a doctor going through his residency phase. He's a medical doctor by license, but he's not fully skilled until he practices his skills for real.
A naturally skilled person is often referred to as a "talented" individual.
A person skilled in reading and writing is typically called literate.
artisan
The word used to describe a person who is skilled in creating works of art is "artist."
statesman
Finance
no one
The person indoctrinated them completely in software technology. This is an example sentence using the word indoctrinated.
A virtuoso is a person that is highly skilled in music or another artistic form. Which means that a piano virtuoso is a person that is highly skilled in playing the piano specifically.
astronomer
Artist?