Natural clean skin!!???????!!!?

hi im a 15 year old guy and like most teen i need help with acne i understand that haveing acne is a natural phase in a teens life and im not looking to get rid of it just a way to handle it ive tried skin care products but really no effect..i have very oily skin and occasionally i get these dark spot where the acne use to be(i do not pop my pimples) so can any one tell me a natural way to get rid of the acne and dark spots?