I've had terrible acne in the past...
1) if they are little red and annoying and not painful at all - just unflattering... I suggest a daily scrub (it's not like pumishing your face or anything! it's just more of a proactive approach), St. Ives is good, although I like the Walgreen's genertic version of it better.
2) if they are big and white - pop them just enough for the yellowy/clear stuff to escape and not bleed (this may take some practice)
3)If it's a stubborn one that under the skin and hurts but won't pop as much as you try; buy really cheapo toothpaste and put it on and let it completely dry - the next morning it should have come to a 'head' and will be poppable!
Message me back if you want more ideas... I've had acne for close to ten years now even though I'm turning twenty in less than a month!