Hi Latchy

I'm assuming you are looking at this from the applicants viewpoint

1. Look at the job description/person specification and have some questions ready on the role
2. Many jobsites have guidance on the types of questions asked at interviews
3. Your local library will have books on interview technique and questions
4. Research the company
5. Have examples of achievements
6. Try to stay relaxed and think before rushing in to answer
7. If you don't understand a question ask rather than waffle on
7. Good eye contact
8. Always remember to smile

I hope this helps