Becoming acne free is a little tough, but with the right acne treatment , you can get there within a few months or so.
First off, it;s best to take a look at your own skin type. Since there's so many different kinds, it's tough to put yourself into one particular category. You may have oily skin, but minor breakouts, or dry skin with a lot of breakouts.
To be honest, it would be best to see a dermatologist, even if it's just once. That way, he or she can set you on the right path, and you can take over from there!