Gender and gender identity
There are some legal rules and restrictions about changing your name and changing your gender marker on official identification documents like your birth certificate.
Apart from that, it's your legal right to identify with any gender (or no gender) in your everyday life and interactions with others, no matter what sex you were assigned when you were born. This might mean using a name that's different from the one you were given at birth, presenting yourself and dressing in a way that feels comfortable, and asking people to use pronouns (“him”, “her”, or “them”) that feel right to you.
There are laws to protect you from being discriminated against because of your gender.
There is some law that is not settled or well established around gender and gender identity, and legal rights for gender-diverse people continue to evolve over time.