I found a great site for interview techniques. It was simple, easy to read and had all the main issues covered.
Some of the tips you find on it are;
‘The Set up
RESEARCH: Whether you have five minutes or five days, research the person and the topic. Run the name on the Internet or check the clips. Talk to the person’s cohorts. Read court records. A well-researched question is a better question. A well-researched interviewer is empowered.
PLAN: Make a tactical plan. Discuss it with colleagues. Whom should you interview first? Where will you interview the person? How much time will you have? Will you tape or not? The best place is usually where the person is doing the thing you are writing about. However, whistle-blowers and reluctant targets are best contacted at home. You might calm a nervous source by taking him or her for a walk. A lunch appointment requires a person to spend at least an hour with you. A phone interview is the least desirable, but also the most common.’