Apply online very standard procedure as other universities. Send documents like transcripts and personal statements, TOEFL and GRE scores to the department. There was no further phone/site interview before receiving the offer email.
Otras evaluaciones sobre las entrevistas para el cargo de Graduate Student en LSU
It was two stages, and all questions were about you and what you can add to the university. Knowing the mission and values of the school is very important. They will ask about your background and what you have done in the past can translate to the GA postion