There are more than 2 genders!
How do you know there are more than two genders?
I've read about it in a book
It is good that you are seeking more understanding on different people and how it all works. It will make you a more understanding person.
Regardless of your feedback, I'm going to keep learning more.
That's good. It's great that you value knowledge and that you're working toward being a more respectful person in regards to gender diversity.