How should girls be initially taught about

Re: How should girls be initially taught about

When i was in class 5,one of the girls in the class would try to educate all girls about it,as she had got hers,but i could hardly understand what she always referred to,but then,when i went home back in Pakistan,there one of my cousins talked and explained it to me,and then i got mine when i was 13.Since i was already told about it,i didn't really panick when i got them.
I believe its just so important that,girls should be taught about it well in advance,so that,they wouldn't panick when they get it for the first time.