Check out the website of the company you're interviewing with and conduct research (size, services, products, etc.).
Prepare a 1-minute response to the "Tell me about yourself" question.
Know what kind of interview to expect – behavioural, technical, etc. (Feel free to ask when scheduling the interview).
Write 5 success stories to answer behavioural interview questions ("Tell me about a time when…" or "Give me an example of a time…").
Prepare answers to the most common interview questions which will present your skills, talents, and accomplishments:
Why did you leave or are you leaving your last position?
What do you know about our organisation?
What are your goals/Where do you see yourself in 5 years?