Here are a few resources for people preparing for interviews.
NewsU online course
http://www.newsu.org/courses/course_detail.aspx?id=nu_interview04
By Chip Scanlan and the Poynter Institute; both have a very good reputation.
Takes one to two hours.
Free for registrants.
Tip sheets from the Committee of Concerned Journalists
http://www.concernedjournalists.org/tools/filter/30
More tips from Poynter
http://poynter.org/search/results_article.asp?txt_searchText=interviewin...


Pros, cons, tips, and traps of e-mail interviews, from Poynter
E-mail Interview Advice by Jonathan Dube