Preparation
Make sure you plan for the interview. Keep a record of the name of applicant, the date and time of each interview and set aside an area for the interview, This should be preferably where you won't have interruptions by phone calls or passers by. Also remember to leave yourself plenty of time for the interview so that you and the applicant don't feel rushed. Approximately 45 to an hour is a good time to leave between interview bookings.
If you've received resumes take the time to read through each applicants resume prior to the interview and make notes for yourself if necesary.
If your applicants are phoning in, then have a few basic questions to ask them over the phone before booking them in for interview. You may wish to speak to them, take their name/number and phone the most suitable ones back with interview times.
Draft a list of standard interview questions to ask each applicant at the interview and ensure the same questions are asked of all applicants. This makes the process more objective and allows for easier comparison, as all applicants are providing the same information. If necessary, applicants may be asked to expand on a particular area of questioning.
Interviews should be done by more than one person where possible, as this creates objectivity.
Remember, if you are interviewing outside of business hours try to have another staff member on site or alternatively, allow the applicant to bring someone with them. It protects both yourself and the applicant and can make both parties feel more comfortable.