To use "WiFi Candy" promo codes, follow these steps: 1. After copying the promo code, go to the WiFi Candy store. 2. Finish shopping for the items you want and proceed to checkout. 3. Paste the valid promo code in the provided box. 4. Click apply to enjoy amazing savings on your order. Remember, these steps can lead to incredible deals and discounts. Enjoy your shopping with WiFi Candy!