As you're preparing, keep in mind the interviewer's objectives for the interview. To simplify greatly, they're likely something like this:
- Confirm that you're actually qualified for the job. The employer already thinks you are, based on your resume; otherwise you wouldn't have gotten the interview. The interviewer's objective is to confirm that in fact you've got the right mix of skills and experience.
- Identify any reasons not to hire you - especially if your resume raises potential issues. This is obviously very important and we'll talk about this a lot later.
- Determine if you'll be a good fit for the "culture" of the organization.
- Look for indications that if you're hired, the employer will later regret having hired you. For example, will you spend too much time at the water cooler, leave after only a few months, not get along with key staff, require too much supervision or remedial training, etc. [More]