If you don't have a lot, like some pimples on your nose, forehead, chin, nose, but not so intense your face is all red and everything:
Use Aveeno Clear Complexion foaming cleanser in the morning and evening.
Use Benzagel Acne Gel in the morning.
Use Vichy "Normaderm Acne Prone Skin" Tri-Activ Anti Imperfection Hydrating Care in the evening.
Benzagel helps cure the pimples you have, and the others take care of your pimples and make sure there aren't going to be more.
If you have serious acne go see a dermatologist.. also not sure the products I suggested will work for you because everyone's skin is different but it's worth the try, it works really well for me!
Hope I helped! :)