1. Sign-up to be on a stores mailing list, especially the big retail stores. They will email you their current promotions and periodically send % off coupons.
2. Save $ using coupon codes. Go to http://www.couponcabin.com/, type in the name of the store of your choice. You will then see if that store has any coupon code savings available. Next step is to save the code (write it down or copy/paste). When you are ready to make a purchase at the store you have selected the coupon code, type in or copy/paste the code at check-out... instantly you will see the savings. *Sometimes a store will not have a coupon code available but don't fret, keep checking back daily.
Shoes.com- They offer a wide variety of designer shoes. I have seen coupon codes for them at http://www.couponcabin.com/. Shipping is FREE.