First things first, there is a difference between looking for coupons to save some money and being an extreme couponer. The latter are the ones that end up at the supermarket with a huge wad of coupons that will certainly drive the cashier mad. The former will probably just end up saving on the delivery costs of that book they have ordered online. The former can also help you save quite some money in the long run.
There are a number of websites that offer coupon codes. In fact, the website that you are shopping from itself might have a number of discount coupons. This is why it is a smart idea for you to sign up for an account with the websites you shop from the most. They will send you details of special offers and coupons so you can save money on shopping.
There are several other websites on the internet that offer discount coupons as well. Some of them have a month- long validity, so even if you don’t need the coupon right now, you can just download it and keep it. You might end up needing it later on. As long as you make sure you use it before the expiry date, you will be fine.
So, by all means, do look for coupons before you shop. You can buy yourself something amazing with all the money you will end up saving by the end of the year!