What is a good skin care regimen for a 10 year old?

My ten year old daughter, otherwise known as a “tween,” just got her first zit. I think it’s time for her to move beyond using water and a washcloth to wash her face at night, but don’t want to give her anything too harsh. What is a good cleanser to start with? Is moisturizer necessary? My mom was sort of clueless about this sort of thing, and I was in high school before I just started using the same products my friends used. I’d like to get her started on good habits before then. Thanks!