The google links should have helped you, for example, in maybe finding the best "template" for a resume, or CV as we call them over here.
If you've never done a CV before, and you don't have a history of different jobs to fill one with, then either design your own, or look for a template suitable to your situation, which appears to be fresh out of university. You don't need a CV which has spaces for your work history and the reasons for leaving different jobs etc..
A little reading, and you might find just what you want without designing your own, or leaving out essential information.
The suggestions were really aimed at someone looking for a career, who may be applying for jobs with moderate sized or large companies, and required to provide as professional looking a CV as they can.
Regardless, if you want to have some kind of advantage over the other people applying for a job, you have to do some preparation. Even if it's a one man operated computer shop, I'm sure he would be flattered if you told him his shop has a great reputation in the area for quality service, and you're sure you could learn a lot from him, as well as adding your own skills to his.
Have you any skills to offer him? What are your strong points?
Don't walk into any interview with absolutely nothing in your head, and if he shakes hands first, great, but don't offer a limp wrist in return.
And don't assume that anyone interviewing you actually knows the first thing about interviewing someone for a job. You will be surprised at how many "interviewers" don't have a clue about the process, and it wouldn't cross their minds to actually shake hands with you. They'll be as nervous as you, and a confident but not cocky attitude will help put them at ease.
First impressions again.
Big job or little job, if you want it my friend, you've got to make yourself a more attractive proposition to that company than the other guys.
And make sure you learn something from an interview. If you fail, learn from it, and take that knowledge to your next interview. If you're a young man, you may have quite a few interviews ahead of you.
Anyways, that's just some thoughts based upon experience.