How to get clear, smooth skin?

I'm 15 and while I don't have the worst skin, I certainly don't have the best. I have dry sky, but it looks oily because it tends to not absorb moisturizer (I'm assuming, I can't think of any other reason why it'd be so oily looking). I have small pimples here and there (mainly my cheeks and forehead). My nose has blackheads, and I have large pores near my nose. My skin is sensitive, too. I also have a lot of scarring. What products do you recommend? And are there any other things I can do to have good skin? Like foods, drinks, places to go? :P (I drink a lot of water, I try to eat healthy, I eat a lot of fruit and I try to sleep at least 8 hours). Am I missing anything?