
From the moment you are first notified that you have an interview, you should plan and prepare to make it the best it can be! On paper, or from resumes received, they have selected a chosen few to interview.
Most likely all persons being interviewed have the basic skills and training required to do the job. Any skills or experience you lack, they have overlooked and believe you could fill the position. It is your job to convince them that you are their best choice.