There's no simple way to 'prepare' for an interview, as you would any other job. It's mostly based off evaluation. Typically (and this process could have changed since I went through) you will take a 'Seminary Prep' course from the Institute, and then you will teach a class for a week to two week...
Interview
Instructor
High School
The Church of Jesus Christ of Latter-day Saints
High School Seminary Instructor
You wear your suit and tie to work everyday, and usually go into work early to ensure you are prepared for your first lesson. Before the first class begins, you will typically have a staff prayer with the other instructors. Students will begin filing into the building where you will greet them an...
Day in the Life
Instructor
High School
The Church of Jesus Christ of Latter-day Saints
High School Seminary Instructor