This is the easy step:
Go shopping!
Again, I do my grocery shopping at Walmart and Winco. I'm armed with my list telling me at which store to get what. Then I complete my shopping for the full month, except for things like bananas and other fresh produce that I will need to buy 2-3 times a month, I reserve about $10 for that.
We buy whatever meat is on sale or running cheap. Take last month, we found a roast and then it was sliced and that one roast lasted us 5 meals because I wrapped 4 slices and put them in the freezer. Each package was a meal along with potatoes or rice and veggies. I also like getting thin boneless pork chops and a 5 pound package of ground turkey. We eat meat 1-2 times a week but most of are diet is based around beans, fish, eggs and other sources of protein.
For cheese, I get slabs of it, which is the cheapest way to get it that I have seen. I usually buy one slab of cheddar and one slab of mozzarella for pizzas for the month. They last us the whole month!