How old were you when you were adopted? Plus how did you remembered?Plus Plus Where were you adopted?

My parents went to an adoption agency and my biological mom there. It was all planned out before I was born and I grew up knowing I was adopted and I see my biological mother a few times a year. I don't know my biological father and I have two half-brothers but I don't think they know me. And it all happened in SoCal. :)