Where did you learn about periods?

Laura Wershler, frequent writer for the blog of the Society for Menstrual Cycle Research, recently wrote a delightful, thought-provoking piece titled: How do girls learn about periods?

In the article, Laura asks:

Why aren’t cool moms and older relatives already talking to the girls in their lives about menstruation? Sharing friendly advice? Passing on wisdom from mother to daughter, woman to woman?

Good questions.  Period wise questions.

Where did you learn about periods?  What about the girl in your life?  Where did/will she learn about periods?

How would you answer Laura’s questions?