Hi,
As the cliche poverty-stricken writer, I do not have much in the way of money...
So over the years I have taught myself, and designed a system for avoiding having to spend considerable money on repairs! In fact, because my computer is often on from 7am ish to late... I used to pay out £100's of each year on these! Additionally, I found 4/5 technicians were not actually that good, and you are better usually doing it yourself in any case!
Nevertheless with a computer that is around 8 years old, and only cost around £120 originally - I have not had to take my computer to a technic