What is the secret to being a good Couponer? How much have you saved at one time

Have you tried this website? She gives you detailed instructions on how and when to buy items, and when to use use coupons. She ends up paying about half of what the original cost of her groceries, was. http://www.couponmom.com/ Sign up with her website, and when you log in, the first page will give you some information on saving on groceries, and there is a free ebook that give you detailed instructions on how to do it. I've been meaning to try it, but never got around to it.