The next thing to do is to find coupons. You can print coupons from websites like:
If you live in a big city that gets coupon inserts, that is the best source for coupons. Some people who are serious about using coupons get several copies of the Sunday paper so they can get lots of coupons.
There are also places you can write to or e-mail to get coupons. There is a list here compiled by (Couponing to Disney) of these places and what people have received from them.
Another way to get coupons is to get them from the store. There are coupons that you can peel off items and use for that item, there are coupons taped to items and there are also little machines that have coupons that you can get. Keep your eyes open next time you shop and see what is available in the store.