I never learned how to brush my teeth.
How could you go through life not knowing how to brush your teeth?
I never thought I had to learn any specific way to brush my teeth.
Are you going to learn about it now?
I think it's too late for me to learn how to do it correctly.
Brushing your teeth in the correct way is important for your oral hygiene. It's not difficult and I think it's one of those things that you should take the time to learn how to do.