How do you use coupons??

like for aeropostal you can go on the website and it gives you a code for the coupon? how do you use that codee?How do you use coupons??
when you checkout at the website there will be an area asking for a promo or coupon code, that is when you enter it and it will take the discount off/How do you use coupons??
LOL...funny question, its easy go to aeropostal and use it with your purchase.
just look at the cooupon and what ever is there in the coupon u get for a cheaper price
just print it out and show them when you go to there store or you may be able to type it online if your ordering something online.
before checking out they ask for any codes and you just type it in.
you give them to a worker or you scan it yourself.