How does one become Jewish?

It is true but you have to have a mikvah were you dunk in a pool but not the chlorine kind and you have to do it naked while rabbis are saying certaint prayers

My mom and I converted when I was little. There's a class-thing where you learn about the religion. Also, there is the whole mikva thing where you go and submerge yourself on water, say a prayer, etc. (At least that's how it was when we went through it.)