Any work experience or skills you have listed on your resume are fair game to talk about during the interview. Your resume is all the interviewer has to go by in order to get to know you. They may pick things out from it and ask you to elaborate. Even though you may have a previous job listed that was many years ago, the interviewer may ask you to explain what you did at that job and your are responsible for providing an answer. This is one step you absolutely won’t want to skip on how to prepare for a job interview.