Quite often the topics of:

Which Bathroom/Restroom do you use?
How should I act in the female bathroom/restroom?
Is it legal to use the femal bathroom/restroom?

amongst others of this nature, arise.

Well here is a sticky for those type of responses to help those who are starting on the journey of the big wide world and how to behave in those areas. Feel free to comment, adding your own experiences both good and bad.