Some great advice so far.....
Seeing as you currently do not have a job, you don't have as much to lose. Until you get your name out there,
it will most likely be slow going. It will take a lot of hustle on your part to get established. Break / fix is a hard market
when there are $300 crappo systems brand new in places like walmart, best buy and so on. A lot of people don't
understand and don't care that what they get for $300 is junk. All they know is that it costs $300 for a whole new
computer, so why pay $250 to get the old one fixed? You'll kill yourself trying to educate them too, you'll never get that
point across to the majority of customers. You'll run into cheapo's as well who will want everything including the kitchen
sink for free or darn near it.
Best advice I can give is price accordingly, competitively and high enough to keep away the riff raff. If your in an area with
a good population, you have a shot at getting a decent amount of clients that understand and value the skills and knowledge
that you have. And if the general area your in has a decent income level, you won't have to worry quite so much about the
cheapos and the $300 walmart special folks.
If you can, maybe try to get a few smaller businesses to do some managed services type contracts. The steady, predictable
income can help you a lot. If you can get a couple of those established earlier on, it should make the stress of the first few years
a lot more manageable. I'd say in general I'd say that trying to support small to medium sized businesses are going to be a much
better avenue then trying to make a living off of residential break / fix type work.