If you’ve never used any sort of acne treatment before, try using a Neutrogena acne complex. They usually work well with minor breakouts. For more intensive treatment, try Proactiv or Murad. I know Murad you can buy at Sephora or Ulta, and you can buy a whole kit that you use daily.
If it’s just minor, use salicylic acid products, but for deeper, larger zits, use high concentrations of benzoyl peroxide. If over the counter treatments don’t work within the first couple months completely, you’ll have to visit a dermotologist I’m afraid, because it’s probably a hormonal imbalance or something.
If it’s super bad, first thing to probably try is getting a bar of 10% benzoyl peroxide soap from a drugstore. It will dry your skin out really bad for the first couple weeks, but it will also fade acne marks and get rid of the big juicy suckers. But, be careful to rinse really well, because it will fade any fabric your skin will come into contact with.