Love the tips. Most are common sense. Try to make the most out of what you buy and throw away as little as possible. Planning meals or having a set of go-to meals that you can switch to when you see a given item or items on sale is a huge saver in the end.
Crock pot cooking things like soups, stew, chili, etc is also a great saver. You can make a week's worth of split pea soup with a few carrots/onions, 2 $1 bags of split peas, stock and a ham bone.
Buy dry beans instead of canned beans. Once you learn how to prepare them, it's significantly cheaper.
This with a chest freezer is truly the way to go. Seasonal fruit on sale? Great, freeze it (berries, peaches, etc). Whole beef tenderloin on sale for $6.99/lb? Buy 2, section them into meal-sized portions and freeze them! And so on. It's how we do all of our meats and a lot of our fruits (we grow our own fruit, so we end up freezing a lot as it ripens all at once in quantities greater than you can eat)
And, if you eat a lot of meat, I would say get a side of beef, pork, bison, etc.
We bought a whole side of bison 2.5 years ago and split it with my parents. Still finishing up a few cuts and will probably try to re-stock this winter. Talk about saving money! Do the math on a side of meat compared to market prices!