No things needed for student just they have to attend and learn my class after that they have to join my regular class and pay fees for me  if there is any doubt they ask me through online I have to teach basic about tamil language  for other states student  just ask if there is doubt in there session they will after through these app  now I introduced about myself iam harinisri studied ece course iam good speaker in tamil language I got  many certificate from state level I know how to teach tamil for other state people  if you are parent of my student i will explain clearly about my session if the parents have any doubt they will ask  through this app also that's all i introduced myself and my teaching style  when I take free class must student introduced about themselves in English after that i teach how they introduced in tamil