After that, you need to convince an employer that you learn fast and will work hard. Sometimes it is easier to apply for a job when no jobs are posted. On the assumption that, in this job market, most are hiring pretty regularly. So if your experience is limited, someone might be intrigued enough to take a chance on you on a contract basis rather than go into a full-time hire. The R word.
Research is a big one here today.
With that research behind you, most interview books have a list of 20 to 30 typical questions. Then go back and listen to the tape and improve upon your answers. When you have done that, then you are ready to do the last piece, which is to boost your own self-confidence. It doesn't matter when, from the first grade to yesterday. When you remember that event, remember your success.