Flow: The Book about Menstruation

Flow is to inform and educate all those who menstruate. It covers:
What menstruation is and why it happens.
What is healthy, how to keep things clean, and how to take control of your menstruation.
What could go wrong, and what to look out for.
Important facts and answers significant questions.
How society sees menstruation, what different cultures have to say etc.
Concerns for those who are just starting to menstruate. 
Problematic opinions that get spouted on social media.
Period politics.