But knowing how, when and where to use coupons is a gift. Turns out it’s not as simple as tear, shop and save. You need to find the right coupon for what you’re buying and, as with almost anything in life, timing is everything. The trick is to find coupons you can actually use, on items you truly need, without wasting precious time and energy seeking out those savings. To get you started, here are some foolproof coupon sites to save you time and money.