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I refer my students to http://www.bettertoeflscores.com/s-t-e-a-l-t-h-7-step-system-to-pass-the-toefl-ibt/2308/ for any TOEFL related questions. The instructor, Michael, has been teaching TOEFL classes for years, is a college professor, and really knows his stuff! I work with him at Cal State University and have first-hand knowledge of what he can do for TOEFL students. Good luck! :)

you can get complete information by searching on web pages because its procedure is varied in diffrent countries