How?

How does she do it? I am referring to Money Saving Mom. Seriously, HOW? Every week (or several times a week) I read her posts and check out her coupons and deals. She frequently posts weekly shopping trips were she spent next to nothing and has a table full of groceries. I have tried and tried and tried and cannot seem to do it. It seems so easy, but when I go to the grocery store, I have other things that we need on the list that I don't have coupons for. I just don't get how she and her family survive on a$30 weekly grocery budget. If I had that, I would seriously come home with like 3 things! I do use A LOT of the coupons she posts and am very thankful for those. But, I really, really, really need to figure out her art of shopping to save my family some money! Last week, I went to Target and did score a few deals thanks to her. I bought PopTarts for $.71, Fruit Snacks for $.70, Bananas for $.69, and a small loaf of bread was free after coupon. Those are some pretty great deals, yes, but the rest of my trip wasn't so great. Someone please explain to me what I am doing wrong!