First class teacher, vvvvvvvv simple English with sufficient content even dull head like me will be able to understand at first' watch.no need to replay and watch.GREAT SERVICE to world. Its being like mother to child feed. What a patience, slowly, steadily before completing the vedio i express my opinion. You are star,GEM.God's child. Which state i dont know, that's not important like sun u spread light for those who doesn't know in this field., i am from Chennai.